I ordered the hot pink with polka dots in a medium, which is my normal size. I'm very busty (34f) so was worried it wouldn't zip, but the little bit of stretch makes a perfect fit! If you're busty with a small rib cage/waist, don't be afraid to order your size. I'm 5'6" and found the length (mid knee) to be just the ticket. Very flattering, and I can wear it with any of my regular bras. I got it for a swing dance party.
I'll wash it and give it some ironing and if it holds up, will change rating to 5 stars.

Also, I bought a petticoat for it. But honestly I've got curvy hips and think the effect will make me too wide. We'll see. It already flares out enough, I find.