It's impossible to get rid of sisters. From the sticky-fingered tagalong to the woman who butts into your love life, your sister is never going to leave you alone. But that's okay. You don't want her to. Make your sister’s birthday amazing by telling her just how much you value her willingness to stick by you. Her tenacity. Her youthful outlook on life. She's the best sister a person could ask for. Make sure she knows it on her birthday.