21. The tension between older and younger people is always there, but, my little brother, this day will be exceptional. So, I promise you to be the best sister/brother all day long. Take advantages of it. Happy birthday, bro!
22. I never missed your birthday little bro and have seen candles adding up on your cake every year. I wish you blow more than 100 candles one day. Happiest birthday to you.
23. It doesn’t matter how many birthdays you celebrate; you can never be older than me. Enjoy this one with this thought.
24. Happy birthday to the most adorable one in the family. I love you.
25. Thank you for bringing sunshine into our lives years ago. This is the day to celebrate your arrival and cherish the moments you made us proud. Enjoy your birthday little bro.
26. Happy birthday younger brother! Every memory with you is precious to me. You are always a reason for my happiness!
27. The most heartfelt birthday wishes to my little brother! May every day of your life is blessed with hope, prosperity and love!
28. You always were my annoying younger brother, and I’m pleased to say that you still are my annoying little bro!
29. The moment you came to our family, I knew there’s going to be an adventure. But I love to be a part of such adventures. Thank you, brother, have a great birthday.
30. I feel so blessed for having such a fantastic younger brother like you! Wishing you a great celebration, have fun!
31. This day is special, cause on this day my little brother was born. I love you so much and I am so happy to have you, bro. Wishing you the most amazing life!
32. You drive me so crazy with your annoying behavior. Still, I cannot stop myself from loving you. Thanks for being so happy. Happy birthday little champ.
33. The warmest birthday greetings to my charming little brother! Love you with all my heart!
34. Happy birthday to my little fighter! No matter how strong I hate you sometimes for all your mischiefs, you’re and will always be my the most beloved little brother. Have fun today for the whole year ahead. Congrats!
35. With this birthday, you are growing a year older. But remember, you will always be the sweetest younger brother to me. Love you a lot, happy birthday.
36. My dear brother, on your special day I wish that God bless you with life, filled with joy and happiness!
37. The best thing in life that my parents gave me is such a wonderful brother! You always know how to bring a big smile to my face. Have an exciting Big Day!
38. Dear brother, Happy Birthday to you! You have always been the mood maker of our home! May you receive as much happiness as you have given us!
39. We may fight, but I love you with all of my heart. Happy birthday to you, my beloved brother.
40. You are younger to me, but you have been more mature than me. Only lucky people like me get such lovely brothers like you. Many happy returns of the day.