Modest in the front, party in the back. Great quality lace, comfortable, just the right amount of stretch, and cheeky; super cheeky, more cheek shows than not; make sure you're okay with that.
I'm 5'8, 150 lbs and ordered the L and XL- I figured I'd send one back- but I kept both. I probably could've gotten away with a Medium too, but didn't want the leg holes too tight.