Happy 40th Birthday Sister in Law Birthday wishes for a sister-in-law (SIL) don’t have to be elaborate. Writing something thoughtful is enough; it shows you care. A simple birthday greeting stating your happiness at her having reached this milestone, that’s all. Since you are a man, I will state some extra reminders here on what you should avoid because they’ll make your congratulatory message sound lesser than intended.
You want to congratulate your sister-in-law for her 40th birthday. You wish to send her a gift to show her you love her. This article offers you a range of options from easy cards online to original ideas for the best 40th birthday present.
Happy 40th Birthday Sister in Law
- We can’t believe it! Give your sister-in-law a big surprise on her 40th birthday by doing something fun to celebrate this special occasion.
- Good morning! Happy 40th Birthday to my wonderful sister-in-law Lisa (who happens to share a birthday with the amazing.
- We can’t think of a person more deserving than you to receive the heart-warming wishes that are being sent your way. Wishing you a 40th year filled with happiness!
- I’m sending you nothing but smiles in the form of good wishes for you on your special day! 40 is nothing but a number. You’re as sweet as ever. Hope your day is filled with all the things that put big smiles on your face.
- Happy Birthday to my sweet sister-in-law! Such a joyous occasion calls for some pink champagne (and maybe something bubbly from the bakery
- Wishing you happiness, life, dear sister-in-law!
- You speak life into our family with your gentle spirit and warm hugs. I won’t forget the first time we met, when you said, “Hello, my name is Mary. I am Jesus’ girlfriend.” Happy Birthday to my favorite sister-in-law!
- Cheers to 4 decades of you, the awesome sister-in-law I never knew I always wanted.
- 40 years young and still a stunner ❤️
- Brother-in-law or best friend-in-law, I don’t know what to call you but I love you for making this girl so happy and for being such a great sister to my brother!
- Celebrating the most beautiful and caring person I know with a (yummy) birthday cake. ❤️
- Low-key birthday parties are always the best.
- Here’s to another #happybirthday! You’re a shining star in our family and we love you so much.
- Happy 40th birthday to my fantastic sister-in-law
- I want to wish the coolest sis-in-law on the planet a happy 40th! Have an amazing year!
- Happy (belated!) 40th birthday, sis! May this year be filled with grace, gratitude, and a fresh start. Many happy returns!
- Happy Birthday, You are a pal and a confidant, and you’ve always been my favorite sister-in-law.
- Celebrating our favorite lady in the whole wide world… you bring joy to everyone and make our lives better every day
- 40 years of bestie bonding! And so many more to come. We’re all still celebrating over on the Instas with the #40th40Instas hashtag, be sure to tag us so we can see your favorites!
- You are a true blessing in our lives. So it’s no surprise that you are loved and celebrated by everyone who knows you! Wishing you the happiest of birthdays!
- You gave us so many wonderful gifts, and you have taught us to be brave, to follow our dreams, and that life is worth living. We are so thankful for you. Love your kids (us) more than chocolate.
- Here’s to the next chapter of your life, and many years of happiness & health. You are such a wonderful person and I hope your day is nothing but magical.
- On this day my darling, I am thankful for the many blessings you have brought into my life. I pray that our friendship never ends and the joy we share continues to abound…
- Happy Bday to my sis in law—the ultimate rock star, mother, and wife
- We’re gonna have a 40th birthday party for you on Nov 18th.
- Happiest of birthdays to the sweetest sister-in-law a brother could ask for!!
- I could wax poetic, but then I’d be losing my birthday wish. Happy Birthday to the best sister-in-law a gal could ask for, who has taught me what true friendship means.
- Wow!!! 40 years… That’s going to take a lot of chocolate. Happy Birthday, Sis—love you ❤️
- Happy birthday, sis! We’re so thankful to have you in our lives.
- A dynamic lady who is as bold and fearless, as she is brilliant and beautiful. #40thBirthday
- I don’t post enough but this is for you. You always want to know what is happening with the family and I am so happy you are a part of it. Happy birthday, Sis. I love you!
- Hope your birthday is filled with as much warmth and laughter as you are. We love you so much!
- You are such an inspiration to me. You’re thoughtful, creative, and unique. Here’s to another year full of dreams
- HAPPY 40th BIRTHDAY to my favorite sister from another mister! Here’s to decades more of laughter, love, and friendship.
- Happiest of birthdays to the best sister-in-law ever!
- I know that moving is tough, so happy 40th birthday. I hope it’s the start of a lifetime of new adventures!
- Best wishes for your 40th birthday, tons of years ahead and to live a happy life.
- Family is the one place you can be yourself without judgment and criticism. Happy birthday, sis!
- We threw you a late 40th birthday party, but we couldn’t forget the real celebration: your upcoming wedding. We love you and can’t wait to celebrate with you soon.
- Happy birthday to our beloved princess, with whom we had many fun family moments. Good luck on your new journey!
- You are the sister I never had and the best friend I could ever ask for—happy birthday with lots of love!
- HAPPY BIRTHDAY to our beloved Alicia! We wish you all the best in this wonderful year of your life with love and joy.
- Thank you for being such a great example, supporter, and aunt to our girls! You are as sweet and as delicious
- Wow!!! HAPPY 40th BIRTHDAY sister in law….you officially have your whole life ahead of you! Congrats to another year.
- Happy birthday to the most amazing sister-in-law a guy could ask for, have all the happiness in the world!
- Sister-in-law, we’re so glad you came into our lives 12 years ago and have filled them with love ever since. And we’ll always be counting the days until your next birthday.
- You are one of the kindest, funniest people I know—and it will never fail to amaze me how much you accomplish each day. I look forward to seeing what’s in store for your next 40 years! Here’s to celebrating a very special 40th birthday.
- Happy Birthday to the sweetest, coolest, most style woman I know. You’re like a sister to me. Here’s to you!
- Happy Birthday to the coolest sister-in-law ever!
- We love you and are so thankful for your friendship. Wishing 40 more years of joyful memories.
- It’s a smile and a sunbeams kind of birthday wish: have the happiest year yet!
- I’m so happy I could cry. If you could only know how glad I am that we found each other, ‘cuz then you’d be glad too! Happy Birthday, Sis.
- 40 candles and I’d like to make a wish: May all the best you can think of coming true on your birthday and every day.
- Happy Birthday, May your year be filled with all your wildest dreams coming true.
- Happy 40th birthday sister-in-law! May you have many more.
- Happy 40th birthday to the most generous, warm, and loving sister in law You will always be the epicenter of our family, and we’re so grateful for all that you bring to it. ♥️
- Happy belated birthday to one of the best, funniest, and most beautiful sisters-in-law!
- You’re perfect. I’m so glad 40 years ago you made your way into our family. You might not be perfect but we love you anyway
- 40 isn’t the new 20, but it sure feels better than 30
- Here’s to celebrating a decade of awesomeness with you. May the next 40 be even more of a blast. Big congrats on becoming a hot momma!
- It may have taken you 40 years to get here, but you sure have the right idea now. Happy Birthday!
- Celebrating another year of always our forever – you’re such a treasure to those that know you.
- Your beauty, brilliance, and energy continue to surprise and delight all of us, in so many beautiful ways. We love you!
- Have a super weekend celebrating another year of friendship and love.
- The charm of your presence makes everyone fall for you
- Happy 40th birthday to my dear sister-in-law! It’s hard to believe you TURNED 40 years old but you don’t look a day over 21 Hope your day is wonderful and filled with love!
- How awesome is my sister-in-law?! She makes a great life partner and an even better mother. I’m so happy to celebrate her today! Happy Birthday!
- Wishing my sis in law a very happy birthday. Hope your day is as pink and awesome as yours.
- Happy birthday to my sister-in-law! You’re married to my favorite brother and also a total badass. I like how you balance culture, family, and adventure on your quest to #LiveWell
- Happy Birthday to my beautiful sister-in-law, who’s as good-looking on the inside as she is on the outside. I hope you have a day filled with all your favorite things—including the first sip of your Starbucks Pumpkin Spice (Skinny) Latte of course!
- Your smile lights up the room and your tender heart holds all kinds of love. Forty years young, happy birthday, Sister
- I’m so proud of you — so glad to have you as my sister-in-law!
- We all know you’re a little bit country, a little bit rock, and roll. Surround yourself with people who want to help you, smile, drink good wine, and be as in love with life as you are. Congratulations on 40 years of collecting them all!
- Happy Birthday to my little sis I’m so lucky God put you in my life. Of all the people and places that I’ve had the pleasure of knowing, I think mine is the most wonderful!
- I can’t think of anybody I’d rather spend my first beer with on their 40th than you. Here’s to more years of margaritas, brunch, and fun.
- Some highlights from this past weekend for the Sweetest Sister, who turns 40 tomorrow.
- It’s your birthday and I don’t have time to bake you a cake so here…
- Happy 40th birthday, sis! You make each day so much better and brighter. We love you with whiskers and all.
- Happy 40th birthday, sis! To you, who helped me reach the other side of 20. Thank you for being my wingman on rooftops and cruises.
- Happy 40th birthday, Just like the best wine, you keep getting more awesome with age.
- Hi! We’re so glad you came to our (name of the party) to celebrate turning 40. You were an important part of making this party memorable and fun for everyone. Hope we see you soon for another one.
- can’t believe your 40th just ended yesterday! enjoy this next big milestone with lots of love and happiness.
- Happy Birthday to my BFF. You inspire me to be a better version of myself every day and have turned into the sister I never had. Happy Birthday, Sis.
- Happiest of birthdays to my beautiful sis the law! Here’s to many more years to come
- Happy 40th birthday to my dearest sister-in-law, because she always looks out for me and teaches me as a big sister would. I love you!
- Happy 40th birthday to the greatest sis a guy could ask for
- Happy Birthday to my sweet sister-in-law! I wanted to share the newest addition to our family with you. Meet Hazel, our new furry baby.
- It’s your b-day. It’s my turn to host the party. Relax, you are turning 40 and that means that you’re pretty much fabulous
- Many happy returns of the day to my adorable sister-in-law and soulmate. Thank you for making my family complete and #blessed.
- You’re the sister of my heart, the daughter of my soul—I’m so happy to celebrate your birthday with you!
- ..The age where you win the prize of “your kids are almost as tall as you are.” Happy birthday!
- Words are unnecessary because we’re right there with your DIY-obsessed spirit, “old soul,” and enviable style. Happy birthday, sis—and lots of love!
- Sisters by blood, best friends by choice. I treasure every moment we get to spend together and can’t wait for our next adventure!
- Wishing you the happiest of birthdays! May today be as wonderful as you are.
- happy 40th birthday sister in law! here’s hoping it is your most fantastic year yet.
- To my darling sister-in-law, with all my love and gratitude for the great sister, partner, mom, and all-around wonder woman you’ve become. Happy 40th birthday. I adore you.
- We are so lucky to have a sister-in-law like you!*happy 40th birthday*
- Happy 40th birthday to my sister Sarah and here’s to you! I hope you’ve had an incredible year and that all your wildest dreams come true this coming year. Love you with all my heart.
- Happy 40th birthday to my sis! You’ve been modeling for me for nearly five decades now, party hats
- Happy birthday to my sister-in-law, the best sister anyone could ask for!
- Happy birthday to my favorite sister-in-law! I had a blast at our party — you know how much I love big bashes!
- Happiest of birthdays to the stylish sis-in-law, who’s always been there for us through thick and thin.
- Today we turn 40, but now that we have each other… I’m not sure we could be any more than 40 years younger. HBD!
- You’ve been like a sister to me all these years, and I love that no matter what our age or situation, we can always laugh and enjoy being together.
- Happy birthday, sis. We’re glad you found your way back to us and we still don’t miss the whole super-spy thing.
- One of the most delightful people I know, and my little sister’s BIGGEST cheerleader. Happy birthday sister in law
- Celebrating a very special milestone with a loved one who makes every day full of sunshine, happiness, and all things beautiful and good. Happy 40th birthday.
- Excited to be celebrating our friend and her 40th birthday with a variety of wine, fresh bread, and charcuterie in tow.
- Happy birthday to the sister of my heart and the best part of being a sister-in-law
- Wow! You’re a parent now! Happy Birthday and welcome to the journey. I love you.
- You are kind, loving, and generous. You are true to your family and friends. And you always let your heart guide you. Have a beautiful birthday.
- To a sister well-loved, a gift was well given, and a wish for many more years of love. We wish you forty happy ones. Happy Birthday to my beautiful and amazing sister-in-law!! My husband loves you so very much!
- that special lady in your life turns 40 this year…what an amazing accomplishment!! Here’s to another 40 years of happiness, love, and laughter.
- A moment to take a breath, no matter how young or old you are. It’s a birthday rite of passage, after all. Happy 40th Birthday!
- I couldn’t ask for a better sister-in-law to my twin brother than you. Here’s to the next 40 years
- Cheers to 40 years of friendship, adventure, and love! Plus always remember your favorite song.
- Celebrating a big birthday with our favorite, most beautiful, and most special woman ever
- Birthdays are always too big a deal around here—but this weekend is different. We’re celebrating BIG🎂 And we’re happy to share the love with you!
- 40 candles for 40 years—wow! Happy birthday to my dear sister, who still looks (and smiles) young enough to be my little sibling.
- HAPPY 40th BIRTHDAY SISTER IN LAW, Wishing you a very happy, healthy, and fabulous year ahead!!
- Happy 40th Birthday, sis! From your favorite siblings-in-law.
- 40 years young and still the most awesome sister-in-law ever. Happy birthday!
- Happy Birthday, Elizabeth! You are the perfect sister-in-law.
- Happy Birthday to my sweetest sister-in-law. We love you!
- The only thing better than one summer is two. We hope you share another amazing birthday (and summer) with your sister from another mister!
- Wishing you the happiest of birthdays, and more love, laughter, and joy to come!
- Your sister has told us not to wait for her, so we’re not waiting. Happy Birthday.
- Happy 40th birthday, dear sister-in-law. Happy birthday, sister-in-law, wishes for you on this special day to be happy and blessed!
- Happy 40th birthday to my sister in–law! Forty is just a number, but I can’t think of a better one to spend with the person I like spending time with the most.
- Happy Birthday, Sister-in-Law! We hope your special day is filled with the laughter and love that you so selflessly give to your family and friends.
- Happiest of birthdays dearest sister-in-law! May your day be filled with everything you wish and more.
- I’m sure you’ll be turning 40 something quite soon…but for now, happy 40th to the coolest, most talented, and gracious older sister I could ask for!
- You’re my sister because you love me, and that’s what I need. Happy Birthday.
- Mary, hope your birthday is everything you’re wishing for!
- Thank you for always being there for me through the ups and downs. Here’s to another five decades of laughs, good times, and adventure.
- Happy birthday, sister-in-law. You’re the sister I always wanted.
- You’re the best sister-in-law ever, and you make John such a happy man. Happy birthday!
- Happy bday to this person I love. And who better to celebrate with than my other sister-in-law?
- Hope you have an amazing day filled with love and good times, 40 is the new 30…
- It’s your special day and we want to show you just how much we love and appreciate you. Hope you have the happiest birthday ever, enjoy!
- Blow the candles and make a wish (hope it’s just what you want). Big Love to this birthday girl!
- 40 is the new 30 but you look like you’ve never aged
- Sending you big birthday love in honor of your special day. I hope your year is beautiful and full of fun times with family and friends!
- HBD to my BFF, next-door neighbor, and sister from another mother
- letting your husband know that you are 100 per cent on his side in the war against herding cats.
- Cheers to being one year wiser and awesome!
- HAPPY 40th BIRTHDAY to my sis in law you are the very best sister-in-law that any girl could wish for Congratulations!
- 40 years old and you still look as young as when you were in college. Happy Birthday Sister in Law!
- Wishing a sweet 40th to an incredible woman! Lots of love and warm wishes your way for the year ahead.
- To the coolest sister-in-law, many more happy years of this weekend.
- I’ll always try to be the best big sister I can be, but it looks like you’re doing a pretty good job of that on your own! Happy Birthday Sister
- dancing through every one of our lives. Happy Birthday sister inlaw
- Here’s to a new year of friendship, health, and happiness. Cheers to 40 more years!
- Happy 40th birthday to my sister-in-law! I can’t believe it’s been 40 years since you met the man of your dreams
- Wishing a happy 40th birthday to my wise and wonderful sister-in-law—with love and gratitude.
- Happy 40th birthday to my other half and best friend and my wonderful sister-in-law! You’re the best. Have a great year!
- What a year it has been. You are the best sister-in-law, and I want to thank you for all you have done for me over the years. You deserve every bit of your success! We love you so much
- We’re lucky to have you as part of the family. Here’s to your next 40.
- Happy belated birthday! We’re so glad that we were able to celebrate with you even though we missed the actual date.