Make Your Sister’s Day With These Funny and Heartfelt Birthday Wishes (2024)

Sisters are like built-in best friends. You share a bond like no other, having spent your formative years together. So when it comes time to celebrate the day she was born, you’ll want to commemorate the event with a birthday message for your sister.

Whether she’s your younger or older sister, a sister-in-law, or a friend that you consider a sister (family can be more than blood after all), a sweet or funny message will make her smile. Share a celebratory birthday wish in a handwritten card, pair it with a gift for your sister, and you’ll be well on your way towards the best sibling award.

Customize any of these birthday wishes as you please by adding a personal touch to make it all the more special. Include an inside joke or remind her of a memory from your childhood (just be sure to opt for a positive one!). Whatever you choose to write, be sure to include a gift and say “I love you,” and you’ll be good to go.

Ahead, find thoughtful, funny, and inspirational birthday wishes for any sister in your life.

1. Happy birthday to the best sister I could ask for. I love you!
2. Wishing you a great birthday and a lifetime of celebrations together!
3. I loved you at five and I’ll love you at 50. Happy birthday, sister!
4. Happy birthday to my built-in best friend.
5. You are undoubtedly one of the best people I know, and definitely the best sister in the world. Thank you for being here and happy birthday!
6. Happy birthday to the person who’s been there with me since day one. I love you!
7. I am the luckiest person on the planet to get to call you my sister. Happy birthday to my favorite person in the world!
8. As you celebrate another year, I hope you know how grateful I am to have you in my life every single day.
9. I hope all your wishes come true when you blow out your birthday candles. You deserve the best!
10. It’s an honor to have you as a sister and watch you grow into such an amazing person. I love you and happy birthday!
11. Sibling bonds are one-of-a-kind, and so are you. I’m so blessed to have you in my life. Happy birthday, sister!
12. Cheers to another year around the sun and for many more to come! Happy birthday, sis.
13. Wishing the world’s most amazing sister the best birthday ever. You deserve to be celebrated today and every day.
14. I’m forever grateful that we have such a strong bond to this day. Cheers to this birthday and all the future celebrations we’ll have together.
15. I thank the universe every day for being lucky enough to have you as my sister. Happy birthday!
16. You light up every room you enter and bring positivity into everyone’s life. I’m so lucky to not only know you but be your sister and be so close with you.
17. Happy birthday to the sister who lets me cry on her shoulder and always makes me laugh. You deserve the best celebration ever.
18. I’m so grateful to have grown up with you. I have you to thank for some of the happiest memories of my life and I know we’ll make many more. Happy birthday!
19. I love you to the moon and back. Happiest of birthdays to a sister that’s made my life so special.

1. This is your yearly reminder that I know all your secrets, so I deserve the biggest slice of cake!
2. I know I’m the favorite child, but we can pretend you are today on your birthday!
3. Happy birthday to my former wombmate.
4. Don’t stress about getting old. That already happened years ago. Happy birthday!
5. Your birthday gift this year is the gift of my presence. Happy birthday, sister!
6. Happy birthday to my favorite sibling. Yes, I know there are only two of us!
7. Your birthday wishes as a kid must have come true since you have me for a sibling now.
8. Our parents learned from their mistakes after raising you, but at least you have an awesome sibling!
9. I got the best birthday present ever: Me!
10. Someone needs to call the fire department! There are way too many candles burning right now!
11. Wishing mom and dad’s favorite child a great day. Oh, and I hope you have a good day too.
12. This year I’ll let you in on a little family secret: Mom and Dad never bake your birthday cake, it’s store-bought.
13. Me being your sibling really is the only gift you need for all of eternity. On that note, I forgot a present. Happy birthday!
14. Don’t worry about the past or future, but the present…I forgot about that one. Happy birthday, though!
15. Happy birthday to the girl who thinks she’s the funny one in the family. Now that’s funny.
16. I’m just here for the cake, but happy birthday!
17. Hey, want to do me a solid and cut me the biggest slice of cake? Thanks, sis.
18. I’m telling everyone that you said my gift was the best present you’ve ever received. Figured I’d give you a warning.

1. Happy birthday to my mini-me!
2. I love watching you grow up year after year. Cheers to more birthdays to come!
3. Remember when you called me old? Yeah, look who’s catching up now!
4. Just because you’re growing up, don’t forget who’s the older sibling!
5. Happy birthday to the girl who always takes my clothes. For my birthday, can my present be everything you stole from my closet?
6. You may be younger, but I’ll always be wiser. So, don’t push it!
7. I hit the jackpot getting you for a sister.
8. For years I used my birthday candles to wish to get a sister until you came along. So, you better use some wishes on something good for me!
9. Whenever I’m feeling down, you’re always there to light up my day and tell a funny joke. Happy birthday, little sis.
10. I hope your birthday is filled with happiness and fun. You deserve the world!
11. Every year, I tear up a bit knowing you’re getting older. To me, you’re just my little sister!
12. Happy birthday to my little sister. You may steal my clothes, but I’ll allow it because I love you.
13. I know you’re getting older, but you’re still little in my eyes. Happy birthday, and please stop growing!

1. Thank you for always being older than me. Now I know what to expect!
2. Growing up, I couldn’t wait to be older like you. Nowadays, I just want time to slow down. Happy birthday old lady!
3. I’m so grateful to have an older sister like you to guide me through life. Happy birthday!
4. No matter how old I get, you’re still getting much older than me! Happy birthday, big sis.
5. Happy birthday to my big sister! You may be bigger age-wise, but I got the tall genes!
6. You’ll always be my biggest inspiration. Happy birthday!
7. You’ve protected me my whole life and I am so grateful for it. Wishing you an amazing birthday, big sis.
8. Happy birthday to the person who inspires me to be confident and keep pushing through all of life’s battles.
9. I’ve always wanted to do what you did and wear what you wore because you were the cool, older sister. No matter how old we get, I still look up to you like when we were kids.
10. Happy birthday to my biggest mentor in life. I love you!
11. I hope you know how grateful I am to have you throughout my whole life. You are my greatest friend.
12. We’ve celebrated tons of birthdays together, but I never get sick of it. Love you!
13. Thank you for taking on the role of being an older sister. I’m forever grateful for everything you have taught me.

1. “With each birthday, you get to decide whether to mark it as the end of your greatest days or the beginning of your finest hours.” –Oprah Winfrey
2. “Count your age by friends, not years. Count your life by smiles, not tears.” –John Lennon
3. “A sister is a gift to the heart, a friend to the spirit, a golden thread to the meaning of life.” –Isadora James
4. “A birthday is like a new year and my wish for you is a great year full of happiness and sunshine!” –Catherine Pulsifer
5. “Today is the oldest you have been, and the youngest you will ever be. Make the most of it!” –Nicky Gumbel
6. “To have a loving relationship with a sister is not simply to have a buddy or a confidant, it is to have a soulmate for life.” –Victoria Secunda
7. “We turn not older with years, but newer every day.” –Emily Dickinson
8. “You know you’re getting old when the candles cost more than the cake.” –Bob Hope
9. “Cherish all your happy moments; they make a fine cushion for old age.” –Booth Tarkington
10. “I could never love anyone as I love my sisters.” –Little Women film adaptation (1994)
11. “My baby sister…I love you…you are and have always been my original bestie…my partner in crime, my ride or die. The one who has always celebrated me in the good times and encouraged me in the tough ones,” –Jennifer Lopez
12. “Every age can be enchanting, provided you live within it.” –Brigitte Bardot
13. “The older you get the better you get, unless you are a banana.” –Betty White
14. “She is ... the mother I never had. She is ... the sister everybody would want. She is the friend that everybody deserves. I don’t know a better person,” –Oprah Winfrey on Gayle King

1. Happy birthday to my sister from another mister!
2. You are my chosen family, and I’m so grateful to have you in my life. Happy birthday.
3. Family is not always bound by blood. We may not be related, but you are more of a sister to me than anyone in the world. Happy birthday!
4. Thank you for welcoming me into your family. I’ve always wanted a loving sister, and now I can confidently say I have one. Love you!
5. Happy birthday to the girl who may not look anything like me, but we tell everyone we’re sisters!
6. You’re more than a best friend to me, you are a sister. Happy birthday to my favorite person in the world.
7. We may not have come from the same womb, but our bond is so strong we may as well have. Happy birthday!
8. You know how they say you become like your friends if you spend a lot of time with them? Well, we’re practically twins at this rate.
9. Happy birthday to my honorary sister. We share clothes, secrets, and jokes—everything sisters do!
10. I’m so proud to tell people that you’re my best friend, but the truth is, you are more than that. We have a sisterly bond and I’ll be with you forever and always!
11. We may not be related, but I love you like a sister. Wishing you the best birthday ever.

1. I’m so grateful to have you in my life and to now call you my sister. Love you!
2. I’ve wanted a sister for my entire life, and I couldn’t have asked for a better one than you. Best wishes!
3. Thank you for marrying into the family. I was a wreck before you came along!
4. I know you have a kind heart because not a lot of people would choose to join this crazy family! Now, you’re one of us!
5. Happy birthday to the newest—but, best—member of the family!
6. When you started dating my brother, I knew you were the one. Thank you for being such an amazing addition to our family! Happy birthday!
7. You must be as wacky as the rest of us if you willingly married into this wild family! Happy birthday, sister-in-law!
8. Wishing the best sister-in-law an amazing birthday. I’m so grateful for you!
9. Happy birthday to an amazing addition to our family!
10. You make holidays and family parties so much better, so I hope we can make your birthday party the best one yet!
11. I hope this next year brings you as much love and joy as you bring us!
12. You’re the best sister-in-law I could ever ask for. Happy birthday!

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