Do you know anyone in a sorority or do you have experience in one? are they all about looks?

becuz i want to meet people in college next year at CSULB, i like to just be natural and be laidback wear sweatpants but im pretty when i wear makeup but i prefer not to wear makeup, and im skinny, but i dont want to be judged by my looks and want to do good in school and have meaningful friendships