I give my clothes a second thought, not necessarily dressing up:
- comfortable clothing
- layers, in order to be able to quickly adjust to changing temperatures (heat on the ground, chilling cold [a/c] in the air, plus anything in between)
- no polyester, plastic etc. (better in a fire)
- no shorts (I want to slide down the slides without getting the back of my legs burnt)
- stable shoes (for running away through debris)
Talk about paranoid, huh?