61. Growing up you were always the most beautiful girl in the world to me. That still rings true. Happy birthday, big sister.
62. You're such a special friend to me, and I hope you know that on your birthday.
63. It’s not what we have in life but who we have in our life that matters. Happiest birthday to my partner-in-crime sister. I love you!
64. Each year, you shine brighter, grow stronger, and become even more of an inspiration to me.
65. Happy birthday to the woman who taught me hard work, honesty, and generosity.
66. Happy birthday, gorgeous! I am grateful for all of our memories and excited to create new ones together!
67. When I’m having a good day or if I’m having a bad one, you’re always the first person I call. Thank you for always being there for me no matter what. Happy birthday, sister!
68. The greatest gift our parents ever gave us was each other.
69. Huge happy birthday wishes to my beautiful sister! You've been my best friend and number one inspiration throughout the years.
70. My childhood memories are full of laughter and fun because of you, my dear big sister! I can’t believe we’re getting older and those times seem like forever ago. Here’s to your bright future—may it sparkle with joy and delight!
71. Hoping your day is as lovely, bright, and beautiful as you are. My best friend for life.
72. My dear sister, I hope you have a wonderful birthday, and that the year ahead is full of joy, excitement, and adventure!
73. Happy birthday to a friend who means everything to me.
74. There is a place that gives me strength, support and inspiration. It is my sister’s heart. Happy birthday to my wonderful sis!
75. Happy birthday, sis! I want you to know that no matter what happens in life, I’m always there for you. That is what big sisters are for! But I truly hope that your life is mostly full of fun, laughter, and good times!
76. No matter where our lives take us or how far apart we live, I never want to stop growing with you.
77. Sisters are like angels. They sparkle, twinkle, and glow. They are the greatest gift our hearts will ever know.
78. We share our parents and the most precious memories of childhood. You know me inside and out. I'm so grateful that you're my sister. Happy birthday!
79. Happy birthday, sweet sister. May today be the start of a wonderful, glorious and joyful year ahead for you.
80. May your birthday be filled with much joy and many blessings.