Hiya,
I know where you're coming from - I'm 5'3 and my teacher politely(?) described my figure as being "straight up and down"! I still get paranoid about my hip movements not looking as good as the curvy girls' but I wear extra hip drapes and scarves off my belt makes them look more obvious.
(have you seen this stuff on Shira's site? -http://www.shira.net/cg/skinny.htm)
Also, if you live in a western country, you may get (as we do) people who call up to book a dancer and specify "I don't want anyone fat!"
- so you'll probably end up getting some gigs out of it too!