Ahhh, what to wear!?!?

I'm taking a tour of a cosmetology school (Toni & Guy to be exact) and I'm stumped on what to wear. My daily wardrobe consists of AE Jeans and T-Shirts from Hollister, AE, and Abercrombie; I don't wanna walk in and seem like i don't care, but i know i have to wear something nice. Please helppp!! D: