1. The Mom.

She's the one you count on to get you home after Ladies' Night Thursday, and she's the one that will tell you all the embarrassing things you did the night before--because she's the only one who remembers. She's the most responsible of your friend group, but she still knows how to let loose every once in a while.

2. The Drunk One.

You can find her dancing on the bar, flirting with random guys for drinks, and/or passed out with a bottle of wine before the pregame is even over. Chances are she won't remember 90% of the nights she goes out, but she has fun and I mean YOLO, right?

3. Little Miss Sunshine.

She smiles so much it actually hurts your cheeks to look at her for too long. She's always happy and she's always ready to celebrate other people's successes or make them feel better when they're down.

4. The Therapist.

When you're having a mid-college crisis this girl is who you call. No matter how big or small the problem is, she always knows what to say to make you feel better.

5. Miss Never-Growing-Up.

She's 21 years old but has the personality and mindset of a 12-year-old. Her upcoming graduation, job applications and real-world problems are a million years away in her head which may worry you a little bit, but you wouldn't have it any other way.

6. The Guy Friend.

Every girl has one and if you don't then you need to get one. Your guy friend gives you the guy advice your girl friends can't. He can tell you when the guy you're crushing on is using you and he rolls his eyes when you ask him whether or not your outfit looks hot because that makes him feel totally uncomfortable. He'll make fun of you for telling him all your girl problems and you'll laugh at him for not understanding his girlfriend.

7. Miss Tell-It-Like-It-Is.

This girl is a real b****, but in the best way possible. She's real with you whether you're asking her about your outfit or whether or not you've really gained the freshman 15. She'll have your back when your new guy's ex is giving you dirty looks at the bar because she's not afraid to put anyone in their place.