I bought the overdyed "Hidden Shadow"- a nice brown. I also own 2 other pairs of 535 and plan on at least one more. Here's the deal: the overdyed ones (like the black, purple and certain blues) fit different. I suspect it is the dyes and the fabric. I have normal
denim ones and they are really nice leggings. If you size up in those, you get a looser legging. However, if you size up in the overdyed, you end up with a slim pant, perfectly acceptable as
pants, not just leggings. I wear an 11 or 13, but when I sized to 15 in the black. purple, and brown - wow! A decent pair of
pants that look smooth and sleek-even on my 5' 3" frame. The 535 is terrific if you get the fit right. I am 51 and get compliments when I wear them. The fabric is thick enough so
underwear does not show underneath, but not too thick.