Your dress sounds hot, Keri! Great reward.
Each size I go down I buy a new dress in the next size. They're goal dresses, yes, but they're also rewards once I fit into them. Mind you, these aren't fancy dresses or anything. They're usually a nice cotton meant for everyday. I live in skirts and dresses.
Aside from that, I buy things as needed like Riddy mentioned. And, I think I've said it elsewhere, but once I get near my goal weight and have managed to become debtfree (and quit smoking, which I've already done) I'm going to get some cosmetic dental work done. I feel like that will really clinch the whole thing from a vanity persepective. I'll be the me I always I wanted to be from head to toe.