Some of us have brothers, aunts, uncles, nephews and nieces, but do you know who we're going to celebrate today? Your sister! Whether you two are like BFF's or each other's worst enemy, we're certain your sister will always love you, no matter what. But before we try to guess what her name is, let's talk about what makes having a sister so awesome!

Growing up with a sister means having someone to talk to — someone with whom you can share your thoughts and feeling — especially since sisters help to make a support system for your future. They encourage you to communicate with everyone around you, which could help you to become a more independent person. Since your sister is also a big part of your memories, she understands you better than most people. And if she borrowed your cute clothes or makeup palettes, then that's just another sign that she wanted to be just like you. Your sister looks up to you, and she'll always be there through hard times. So show your sister some love today by telling us how awesome she is! Just don't mention her name because that's where our accurate guess will come in!