1. She's rarely afraid to confront a difficult situation, like going on a job interview or clearing the DVR.
2. She never hesitates to speak her mind.
3. Your sister will drop her original plans to come to your rescue.
4. Her sense of humor is wonderfully witty and sarcastic.
5. She's always down for a kickass adventure.
6. She changes the world with her flawless attitude and intellect.
7. She's awesome because she treats you like a fellow superhero, not some average citizen.
8. She can hold down a conversation with anyone at every family event.
9. She's a complete force of nature.
10. Your sister knows how to fight the bad guys off just by raising her eyebrow.
11. She's always there to protect you against the bullies of the world.
12. Your sister is up all hours of the night kicking butt on Twitter.
13. She never holds back from letting people know how ridiculous they actually are.
14. She always looks out for your best interest by sending you e-mails about upcoming summer internships.
15. Your sister is quick on her feet in uncomfortable situations.
16. She's the perfect role model for young men and women everywhere.
17. Internet trolls never bring her down -- your sister is invincible.
18. Her stress release might be Netflix, but she's always on the move making a great name for herself.
19. She's never afraid to take a risk and fight the norm, whether it's getting a new haircut or writing a controversial article.
20. Your sister is someone you can always depend on.
21. And the world would be lost without her beautiful intellect and superpowers.
This post was created by a member of BuzzFeed Community, where anyone can post awesome lists and creations. Learn more or post your buzz!