161. You know who is my best friend in the world? It’s you, sis. Happy birthday!
162. I know that no matter what, you will always be a part of my life, and I’m so thankful that I have such a genuine sister.
163. The best things in life are not things, they are sisters.
164. We are sisters by chance but we are friends by choice. Love you always. Have a great birthday!
165. May you have a blessed year ahead. Wonderful things are coming your way!
166. Some people are just a joy to be around. You're one of them. Thank you for always being authentically you!
167. If I had to choose someone to be my sister, I would still choose you! You're the best sister and the coolest girl I know. I hope you have a great birthday!
168. Sister, you were the first best friend of my life and you’ll remain my BFF. Wishing you a happy birthday.
169. You're a beautiful person, a loyal friend, and such a special sister. Thank you for bringing so much joy and laughter into my life. I hope you have a wonderful birthday!
170. You always show up for the people around you, be it your family, friends, or acquaintances in need. The world was blessed the day you arrived.
171. Your friends may come and go, but sisters will always be there for you—whether you like it or not! Happy birthday.
172. It's so wonderful having a sister like you in my life! I wish you all the happiness in the world. Happy birthday!
173. You truly are an inspiration and role model to me. Thanks for being an amazing sister and friend. I hope you have a brilliant birthday!
174. Wishing you a birthday that sparkles and shines.
175. Happy birthday to the best sister in the world! I hope you have a fantastic day!
176. Happy birthday to my lovely sister! The world is a better place with you in it.
177. Being related to me is really the only gift you need. Just saying. Happy birthday!
178. The greatest gift our parents ever gave us was each other.
179. The only thing better than having you as my sister is my children having you as their aunt. Happy birthday!
180. When you need someone to be there for the most important parts of your life just call me, and I will come running. Good or bad it doesn’t matter because there is no moment I will not be there for you.