I play a wench in a medievel metal band, so I wear one everytime we have a show. I have about 6 or so in my collection. I have found for really putting smaller chest size up is ones with straps. The renissance kind. I really enjoy the lacing in the back, makes things look really good.
I also did alot of searching on the internet. I came across a little shop in New York online that has several sizes, styles. Just go to a search engine and put in a color and corset/bodice and you wouldn't believe what you get back.
The ones I have are all fabric and have run from $35 to $80. I am gonna save up for a leather one next!!
I love them and wish I could get tons more!!