81. It's great to know that you're more than just my sister. You're my best friend, too. Through good times and bad - whenever I really need you - you've always been there. I'll always be there for you, too. Happy birthday, sis.
82. I’m celebrating our wonderful friendship on your birthday.
83. You were my first friend and will always be my best. Happy birthday, sister.
84. Wishing a birthday that's as beautiful as you are, inside and out, to my lovely sister-in-law.
85. Happy birthday to a wonderful sister and friend! Thank you for always being so supportive and encouraging. I appreciate absolutely everything you have done for me, and all your love and laughter over the years.
86. We are sisters by chance but we are friends by choice. Love you always. Have a great birthday!
87. Your friends may come and go, but sisters will always be there for you—whether you like it or not! Happy birthday.
88. Friends come and go through life - family is forever. Here's to making more precious memories together until we're old and gray. Happy birthday!
89. I hope you know how much you're loved on your birthday.
90. Thank you for always encouraging me to go after my dreams. I hope this year every wish of yours comes true because you deserve so much happiness in life. Happy birthday!
91. Sisters fill your soul with bright sunshine and your heart with laughter and joy. Happy birthday to you!
92. When I count my blessings, I count you twice! Happy birthday to my dear sister and best friend!
93. I’m so lucky to have a beautiful and kind-hearted sister like you. I hope you have a wonderful birthday.
94. Happy birthday to my awesome sister! I’m so proud of all you’ve accomplished. Thank you for being such a great example.
95. We have shared so many magical moments of our life. We laughed and cried together and made smiles out of frowns. Wishing you a happy birthday.
96. You’re the sunshine on a cloudy day. You brighten our lives and we’re so blessed to have you in our lives. Happy birthday, dear sister.
97. You make every day brighter just by being yourself.
98. Wishing you a birthday that's as wonderful as you are, my sister.
99. In the kaleidoscope of my life, you form the most beautiful patterns filled with vibrant colors. Happy birthday, sis.
100. Want to use your sister's birthday as an excuse to tell her just how much she means to you? These sentimental, heartfelt, and emotional birthday wishes for sisters will help you do just that! Don't forget the tissues...