I wore shorts and a polo my first day of rush, and I was one of the few. A lot of girls wear sundresses every day (which is actually pretty smart, cause they're more comfortable and cool than shorts). Skirts are very common as well.
UF doesn't give out philanthropy round shirts. The UF website says to wear clothes that you don't want to get glue/paint on. Honestly, at a lot of the houses I barely even did the craft because I was so deep in conversation with my rusher. Most of the crafts (at least 2 years ago) were simple and involved neither paint nor glue.
I cannot agree more with what AXOrushadvisor said about tight clothes. Girls do not care about your cleavage. Look classy, and well covered. You don't want the only thing that the girl rushing you to remember is how tight your dress was.
For orientation, most people are pretty casual. You just meet your group and your Pi Chis. Bid Day, most people wear cute sundresses or a skirt and top. You do receive a bid day shirt, but usually no one wears them that night. Most chapters have their newest PC wear their bid day shirts the next day of classes, so everyone can show off their new girls
