I am tardy to the party with whole leggings thing.  I have a couple of pairs, but unless I pair them with a long sweater, I always think I look like I'm out in public wearing my pajamas.  No more!  The whole "denim" think removes that stigma entirely.  Now, they are still leggings so they are thin.  But they aren't so thin that every bump of cellulite is visible.  I wear a 14/16 and ordered an XL.  I find them to fit very well throughout the legs, butt, hips, and thighs.  They are a little long, and I am not short at 5'7", but with some strategic gathering here and there, it's a fit that allows me the grown-up expectation of "pants" combined with my lazy desire for "no pants".  I will be replying on these for weekends and evenings from now on.