Yeah I'm gonna sign in here for NO on the "sexy" lingerie.
This is more of a PSA than anything else, actually: A word about underwear--always always always make sure it's loose enough that it doesn't poke into your flesh around your waist and hips. This might mean buying a size larger than usual. Nothing makes a person look fatter than clothes that are too small.
So you see what I mean, here are links to examples.
This thong is too small:
http://www.cantweight.net/files/album09a/thong.jpg
This thong is JUGST RIGHT:
http://www.1059thex.com/template/images/thong.jpg
They are on women but the theme holds true for ALL clothing--if it makes you look like the Michelin Man with fat bulges everywhere, it's too small!