You’re probably looking for a birthday message for your sister. We’ve got you covered. On her birthday, remind her that she was already your best friend when she was born and share our 38th birthday wishes for sister with her!

Happy 38th Birthday Wishes For Sister

1. Happy 38th Birthday to my beautiful sister! You’re one of the most amazing, complex and creative beings I know. I’m proud to be your sister, proud to call you family. Cheers too many more years of love!
2. Happy 38th Birthday Sis. A sister like you comes once in a lifetime. Happy birthday to a wonderful person who brightens up my world every day. You are an amazing friend and I love you very much. Have the best birthday ever!
3. Dear sister, you are so special to me. You are an excellent role model and an incredible person. I have always looked up to you, and as I grow older I only respect you more. I hope that you have a fantastic birthday! Happy 38th Birthday Sis.
4. My dearest sister, I am so lucky to have you in my life. We’ve grown up together and watched each other go through all the adventures and misadventures that life has brought us. Thank you for always being there for me whenever I need you. You are a great listener, an amazing friend and simply amazing! Happy 38th birthday!
5. Wishing you many more years of happiness and continued success. I am so proud of you and consider myself blessed to have you as a sister! You’re the best sister I know always there for me, always ready to help, always lending an ear. Over the years we’ve experienced so much together from watching summers slip away to celebrating our many accomplishments. From tears of sadness to tears of joy. Happy 38th Birthday Sis.
6. Happy 38th Birthday to the one and only!!! You are my soul sister, you have been there for me through thick and thin… I love you for all the good times, your laughter, your company, your encouragement and everything else. Oh, how I wish I could make you a big birthday cake today! Have your absolute sis birthday ever with lots of champagne toasts!! Love you sis!
7. Happy 38th Birthday Sis. I’ve known you since we were kids, but over the years I’ve come to know you as the most amazing woman I’ve ever met. You have a beautiful heart and beautiful smile and always manage to put a lovesick puppy like me at ease with your wisdom. I truly admire you and look up to you in so many ways. You are not only a sister, but also my friend. Knowing that I will have you by my side this year while turning to 38 years.
8. I know I’m not a big sister but I feel like one because you have always been there for me. Even though I may be a little younger than you, we are sisters and as sisters, we will always have each other’s backs. You are one of the nicest people I know. Happy 38th Birthday Sis.
9. Happy 38th Birthday Sis. I promise to always be there for you in good times and bad. I’ll be a shoulder to cry on, someone to vent too and a friend who will always just listen. I promise to give you the best advice when you’re stuck in a rut and help you through whatever life may throw your way as long as I can. You’re the only sister I’ve ever wanted, and though sometimes I don’t get why we see eye-to-eye.
10. Happy 38th Birthday Sis. I’m so glad I can finally call you Sister! You mean so much to me and I’m beyond thankful for all the years we have shared. I look forward to many, many more. Thanks for being my sis!
11. 38 years ago you were born into the world and my life. I can’t believe that you are going to be 38 years old soon! You have been a great sister who has supported me through everything and anything.
12. Happy 38th Birthday, Sister! I hope your day is filled with only the best experiences. Not only have you been an amazing sister and friend to me but you have also given life to some of the most beautiful creatures on Earth! It’s been a pleasure having you for a sister and I can’t wait to see what 38 has in store for you.
13. I’m so excited! It’s your 38th birthday! This year is off to a great start and we haven’t even left the room yet! The decorations are amazing, you did a fantastic job. I know today will be perfect because you are in charge of all of it. You always take care of me and I couldn’t be happier that my first 38th birthday is with you.
14. You are 4 years older than me and what I’ve learned from you I wouldn’t know if at all. You’ve always been the greatest example for me and I will always look up to you for that. Happy 38th birthday sis!
15. We’ve lived 38 years as sister and I couldn’t imagine a life without you. You have always been there for me and we have shared so many amazing memories. You’re so caring, sweet, kind and an amazing woman. I love you more than mere words could ever express! Happy 38th Birthday, Sister!
16. Happy 38th Birthday, Sister! You have been a role model for me and I will forever be grateful for that. You are a great sister and I know that you will be an even better wife, mom and grandma. I wish all the best for your birthday!
17. Happy 38th Birthday, Sister! I just want to tell you how much you mean to me on your special day. You always have been there for me and now with my family’s blessing, I can’t wait to be there for you too. Thank you for being such an important part of my life.
18. Happy 38th birthday sweet sister, I love you more than you can imagine.
19. Happy 38th birthday to my beautiful big sister. You are so young at heart, but I guess that’s what makeup does for you! Just kidding you look fabulous by the way. You make everyone feel welcome with your infectious laugh and warm loving friendship. Everyone should be just like you…they would be very lucky.
20. Happy 38th birthday sis! I know today will not be so easy but you are a strong woman and I know you will make it through. Good luck on everything and happy birthday!
21. Today is a very special day because you were born. I would be less than what I am if I didn’t let you know how much you mean to me on this day. Happy 38th Birthday, Sister! I love you more each and every day, for eternity!!!!
22. HAPPY 38th birthday. Words cannot say just how amazing you are. You are the best sister a person could ask for and I love you so much. I hope your day is filled with love, happiness, and joy. You deserve it all!
23. Happy 38 years old to my dearest sister, please accept my best wishes for a wonderful birthday. With you as always as an amazing example, it is so easy to follow and to find direction in life. I’m eternally grateful to you and respect you very much and wish your many happy moments….
24. I may not be able to give you the world, or make all your dreams come true, but know I’d make an effort to achieve that; I’m here to make sure you smile, if it’s not a silly grin, then at least it has to be a smile. On your birthday, I want you to know how much I care and will always care. Happy 38th Birthday my younger sister!
25. You’ve always been there for me, a shoulder to lean on, a friend to talk too, besides mom and dad myself. Through our struggles and triumphs we have remained close. I feel that you are like my other half. You know more about me than anyone… no one knows how I feel except you. I am proud to call you my sister…Happy 38th Birthday to my kid sis!”
26. Wishing my precious sister a very happy 38th birthday. I am so very proud of you, and everything you have achieved. Thanks for always staying true to your dreams and following your heart. This year is going to be special with you at 38, plus I can’t wait to celebrate my first birthday again with you! Cheers to you big sis!
27. Happy 38th Birthday, Sister! You are the best sister in the world. You always find a way to cheer me up and make me feel better. I am so lucky to have you and would hate my life without you. You are the most amazing person I know, please get old very slowly so I can be young forever.
28. I look up to you as a sister and friend. Happy 38th birthday, and again, thank you for being such an amazing friend.
29. Happy 38th Birthday, Sister! It’s a special day for another year, one that should be celebrated by you on your special day. I want to thank you so much for being the sister I can always turn to, the one who puts up with all my nonsense and understands me like only a sister can. You mean so much to me and I can’t wait to see what the future holds for us.
30. My little sister is 38 years young! Just a couple days before my big birthday bash. But don’t worry, I promise to share some of the attention with you. I have so much respect and love for you. You have taught me so much about life and about myself. From the moment you were born I have tried to be there for you whenever you needed me. So look down on me from heaven, it is finally your turn to shine!
31. Happy 38th birthday! I hope you have the most amazing year yet! You are the first thing on my mind every morning and the last thing on my mind every night. You mean so much to me. I don’t always tell you enough, but that is going to change this year. I love you and I will be right here to watch you grow in to an amazing woman!
32. Here is your 38th birthday card with a hefty helping of love, hugs and kisses! I’m so glad that you were born and we can share this journey together. Have a great year, sis!
33. Happy 38th birthday to the most wonderful sister a guy could ask for. I remember the days when you were my friend and I was your sibling, but now somehow you’ve become my best friend too. I love you so much, sis!
34. You are my best sister in the whole world. When I think about you I smile. I have so many wonderful memories of you. You are a truly amazing person that deserves anything good in this world. Happy 38th birthday!
35. You are a beautiful person, inside and out. You’re smart, generous and talented. I’m so glad we became sisters! I love you very much. Here’s to one more year of making memories together! Happy 38th birthday!
36. Happy 38th birthday! You are more than just my sister, you are my best friend. I can talk to you about anything. You have been there for me through thick and thin. I am more grateful than words could ever express that I get to share my life with you. You mean everything to me, love you sis!
37. I want to wish a happy 38th birthday to my beautiful sister!