The holidays will be here before you know it, so it’s time to focus on the best gift ideas for the beauty-loving girl who knows you better than anyone. We’re talking about your sister (or your sister from another mister if your best friend is so close, she's practically blood). She’s the one who's always been there for you and, as such, she deserves a gift that reflects that. If you’re having a little trouble deciding just what that might be, draw some inspiration from our favorite beauty gifts of the holiday season that we can’t wait to give to our sisters (OK, OK, and maybe a few that we have on our own wish lists too).