Hey, I've been belly dancing for just over 2 years and absolutely love it. Got a show on the 13th of December and am getting really excited about it, our teacher came up with some an awesome choreography this term, can't wait!
As for clothes, some soft trousers are fine, a lot of girls in my group wear leggings, just something thats easy to move in, and a tight top so the teacher can see what you're doing. Bare foot or ballet shoes are common footwear, socks aren't recommened as you may end up slipping around a bit! I feel weird not having something around my hips when I'm belly dancing, whether it be a coin belt or just a regular scarf, plenty of places sell these cheaply online if you don't have any yet.
I think its so much fun, hope you enjoy it!
xxx