All kids are unique, so are the 3rd birthday wishes for sister. You can personalize these wishes to suit your relation with your sister. Here’s a list of some of the most memorable and funny wishes for third birthday that you can send to your sister on her third birthday.

Happy 3rd Birthday Wishes For Sister

1. Dear Sis, First of all, thank you for being born! You are the wonderful sister I have been dreaming about. You are smart and funny, kind and thoughtful. I think you are a model sister and person. As much as I like to tease you, I really love you a lot. Happy third Birthday from your brother who will always care for you no matter what.’
2. Hey sis! It is your third birthday and I hope you have a great one. No doubt you’re going to have a huge party, just like every year! Since it’s your birthday I will only ask of one thing: be happy. We do everything for a reason, so maybe it’s time to start doing exactly what makes you happy. You are truly an amazing person, who can give out amazing hugs and kisses. I love you so much.
3. Third birthday, another year older and wiser. Three candles, a cake with blue frosting. I hope this year brings you happiness and a lot of toys. You seem truly happy, a smile never leaves your face. Happy Birthday!
4. Sis, third birthday wishes for sister yes I know we fight. I know that you ignore me, but please believe me when I say that there’s nothing in this world I wouldn’t do for you. You are my best friend and my sister. You may not be one of those girls with the perfect hair or newest clothes but you have the most beautiful heart and soul and even though it might be hard to believe, you are the most special person in my life.
5. S is for the sweetness of your smile E is for your eyes that twinkle baby girl T is for the tender touch you give me B is for the brightness that you bring to my life Y is for why I couldn’t love you more. Happy 3rd Birthday to my favorite sister!
6. Happy third birthday wishes for sister! I hope you have the most wonderful day. Today I just want to tell you how much I love you and thank you for always being there for me whenever I need you. You are the greatest sister anyone could ever ask for, and I will never forget what a wonderful big sister you’ve been to me. You make me laugh, smile, and happy just by being yourself. So here’s to another enjoyable year…Now go out and blow the candles.
7. Sis, Happy birthday for today! There’s nobody in the entire world that is more special to me than you. I love you very much and happy 3rd birthday, my dear sister!
8. I have loved you since the moment I met you. You are more than a sister, you’re my best friend! I hope today is full of many more years of celebrating your 3rd birthday with you.
9. Dearest sister, today is your day, a momentous time. You have grown much since the time we first met. Now you’re three and I just want to say that together we’ll share many more birthdays. This is all because of you! Happy 3rd birthday!
10. My dear sister, you may be only three years old, but you mean the world to me. I am so proud of you. When you speak with your friends and family, I can tell the effort and love you put into it. We are true best friends because whenever I am hundred miles away from you, I still feel closer with your sweet smile. You say the cutest thing too “mommy and daddy”. You were the most beautiful baby when you were born…
11. Happy Birthday sweet sister! As the prettiest and coolest of all my sisters it is only fitting that you get the oldest (by a few months) most humble, yet sincere wishes. As you turn three I hope this new year is filled with joy, happiness, laughter and as many Puppy Chow moments as possible. May your Birthday be filled with treat-filled booties and lots of love from little sister?
12. Hey sis, how’s it going? I can’t believe you’re 3 years old now! You are such a great sister, always by my side for everything. Being your big brother has been so much fun and I couldn’t imagine my life without you. You really brought out the best in me and inspired me to be myself. I hope you have a great birthday and always know that I love you more than anything else!
13. I can’t believe you are three now, but as I look at your face I could never see a three-year-old. Just seeing you makes my heart beat this fast because I love you so much and I want to spend every moment we have together for the rest of our lives! I am the luckiest sister in the world.
14. You’re 3! You make my life so much more enjoyable. There are so many things that I do with you in mind daily. The way you smile and laugh, the cute way you talk, even the funny faces you make just warm my heart. It amazes me how special you make mom and dad feel every second of every day like there’s nothing else in the world. Happy birthday little one, I hope today is filled with laughs and lots of love.
15. Happy 3rd birthday, sister! You are the best, most caring woman. Also, you are the most beautiful on the outside and even more beautiful on the inside. I love you sis and I’m so glad that you were born.
16. It’s your birthday already! Happy 3rd Birthday sister!!!! I hope you have a special day. So we are celebrating your special day. And also want to let you know that how much I love you and how I miss you so much. And how I wish you’re next eighteen years come fast because I can’t wait to see you holding my daughter in your arms.
17. I am so thankful to have such an amazing sister. I know the two of us will get along from here on out. You are the best gifts in my life, and I can’t wait to be with you. We will never fight again! Good morning honey, I just want you to know that I love you very much. Happy 3rd Birthday.
18. Happy 3rd birthday, dear sis! I’m about to become an aunt, but I hope my gift will be enough for you in the meantime; it is a genuine piece of the moon. The moon has always fascinated our ancestors from time immemorial, it is a symbol of mystery and wisdom and goddesses worship the moon for its beauty and brightness. I don’t know why I love the moon so much but even as a child I would stare at it for hours.
19. Surprise, this is your Birthday card for three-year old girl who just turned 3 years old! I want to wish you the best in accomplishing all your goals and reaching all your dreams you want! I hope that rubbing all the good key luck, health and wealth are with you forever! Customize some Happy Birthday cards and send it over to wishing her magical moments of happiness and celebrations.
20. Today is a special day because you were born. You make life so simple. I am so glad that you are my sister. Seeing you smile makes me happy every day. You are my best friend and I love you more than words can say. Happy 3rd birthday!
21. I knew that you were the best little sister I could ever have. You make me want to be a better person. No matter what happens in life, I’ll always be there to help you out. Happy 3rd Birthday to my little sister… From your big brother!
22. I hope you have an amazing 3rd birthday. I hope you get everything you wish for, because more than anything you deserve it! You’re an amazing person and I couldn’t be more proud to call you my sister. I love you!
23. I’m so glad God picked me to be your older brother. I love making you smile and laugh. You are always there for me, and I will always be there to protect you. I’m very proud to have a wonderful sister like you! Happy third Birthday.
24. On your third birthday I have a lot to be thankful for. I am thankful that you were born because if you weren’t, then I would have never been born. My whole entire world revolves around you my sister. You are my best friend and are there for me no matter what. On this special day I want you to know that I love you so much and I’ll be here for you forever.
25. I’m not the best at writing poetic love letters, but I try my best. I really don’t know what I would do without you in my life. You always have a smile on your face and such a big heart! I hope to never lose you or forget how much we love each other as sisters. Happy 3rd birthday!
26. As you turned three years older, I wanted to make sure and let you know Happy Birthday! I love you more than words can ever express. You are my little sister and I cherish every moment we spend together. Boy or girl, nothing will change my love for you.
27. It’s hard to believe that you are 3 years old! I can still remember when you were just a tiny baby in the hospital and now look at you! I love you so much little sister. You are such a beautiful, happy and smart girl and I have the best time with you everyday. I love playing with you, coloring with you and tickling your tummy. You make me laugh with every silly face, joke and funny dance move. I feel like the luckiest sister in the world.
28. I wish I could tell you Happy Birthday in person, but I don’t think it would mean as much as this note. HAPPY 3RD BIRTHDAY SIS! I love you so much. You are such a wonderful person. I hope that your birthday is everything you want it to be and more. I only wish you continuous happiness and joy.
29. Happy 3rd Birthday to my best friend! You’re the sister I always wish I had. You are smart and funny and always there when I need you. I love hearing your laugh and talking to you every chance we get. I can’t wait for another year with you, because I know it will be full of memories that won’t fade away.
30. Happy birthday to you my sweet little sister, who has grown a year older and wiser, happy 3rd birthday! Hope that you have an amazing day filled with fun activities where you can celebrate with your family and friends. Happy Birthday!
31. Happy 3rd Birthday, dearest sister! I wish we could have been together for your special day. I’m sorry that I couldn’t be there with you, but I hope to make up for it soon. I know we haven’t always gotten along, but in my heart it will always be little (sister) and me against the world!
32. Happy 3rd birthday! You’ve grown so much, but you are still my little sister. I hope this year is an awesome one for you. There are still many more to come, but today is the best because it’s your day!
33. HAPPY THIRD BIRTHDAY, my little sister! Age is just a number and I wouldn’t change you for the world. You may be different than me, but we have so many similarities too. We love our family, we love spending time together and we both know how to have fun. I can’t wait to see what your future holds. I’m so proud of you and I love you with all my heart.
34. Happy third birthday to my favorite sister! You’re my role model, my best friend and the one I look up to the most. I love you!