I bought this costume for a Halloween ballroom dance party. I wanted something that wasn't too heavy or long, and that I could dance easily in--this was perfect. Very breathable. I actually wore a long black skirt under the dress to give it a little more heft since the material is actually quite thin (though not so thin that it's translucent.) I got so many complements on this dress--it is really a great value costume for the price. Several people thought that I was Rapunzel from Disney's Tangled because of the purple color. I intend to wear this for many more Halloween parties to come. As far as sizing goes, I'm about 5'7" and pretty thin, and the small/medium worked perfectly for me.