Find 100+ heartfelt happy birthday wishes to sister in English — funny, sweet, sentimental and inspirational messages to make your sister feel loved, celebrated, and special. In this article, I’ll show you how to craft the perfect birthday caption for your sister’s special day. So save this page, tell your friends, and get ready to wow your followers with 231 unique and heartfelt captions that will make your sister feel loved and cherished on her birthday! A list of the best happy birthday sister wishes, and quotes for Instagram captions, including ones that are funny, cute or to wish her a happy birthday. A birthday caption is a perfect way to convey your emotions and express your gratitude for having your sister in your life. Choosing the right birthday caption for your sister can be a challenging task, but it is essential to find the perfect words that reflect your relationship with her.