41. You are one of the best gifts God sent to us. May you are blessed with health and happiness. Have a blissful happy birthday.
42. Have a blast on your 21 st Birthday! However, you are celebrating this Birthday from last 5 Years. Keep having fun!!!
43. Happy birthday, sister. Thank you for always being there when I need you, you are my support and best friend. I wish you a wonderful birthday!
44. You are a beneficial person. For instance, in my exams, you always do lots of my work and help me concentrate on my studies. Happy Birthday Sister! Thanks for helping me.
45. One year closer to me, but actually a lot younger! Enjoy life sis, may the smile never leave your face! Happy Birthday.
46. Happy Birthday to my prettiest, sweetest,loveliest, cutest, youngest Sister…..I want to see you more comfortable and healthier.
47. Happy Birthday, Younger Sister. Firstly, I want to tell you that you are my best friend. Secondly, you are my advisor, whenever I need you, you are always there to help me and Lastly, I love spending time with you. Thank you, sister!
48. Sisters share clothes, food, room, and secrets. I love sharing my stuff with you. You are more than a sister to me. Happy Birthday to my sweet little sister!!!
49. Happy birthday my little sister. I wish you lots of success in school, many boyfriends, and loyal friends. Happy birthday!
50. To the youngest member of the family, I wish only carefree happy days filled with lots of laughter and games. Remember that your family loves you very much!
51. Besides your sister, you are my best friend. I love sharing my experiences with you and I wish this will always continue. Happy birthday, sis!
52. I love playing with Barbie dolls, but since afteryour birth, I have been playing with you. Happy Birthday my Barbie doll.
53. To the sweetest sister, I wish that you will always be so kind and studious, step bravely forward, and know that we will always be with you.
54. Many friends come and go from my life but Sisters stay forever that is why I want to say Happy Birthday my Sister and Best Friend!
55. Blow out every candle and make every wish count because you are the smile of our family. Our warmest wishes and love is always with you, my little chunk of our family.
56. Happy birthday, dear! Make your dreams come true and enjoy life.
57. I cannot imagine life without you! You are the most important person to me and on this day I wish you to have the most wonderful birthday you have ever had.
58. I want to wish you all the success for this year and all the coming years. Most importantly, I want to see you most successful in your profession. Love you, baby sister, and have a happy birthday!
59. And here you are now 21! I wish you from the bottom of my heart to have a lot of success in your studies, to find the most loving boyfriend, and to be surrounded only by loyal, fun friends.
60. Happy birthday my little beast! I wish you health, family happiness, and lots of success.