Facts:

 I LOVE this garment!

 It fits very well and pads my hips awesomely.

 It seems to be mainly for the hips and not so much the rear.

 The material is firm but still has alot of stretch so you could probably go a size or two smaller than pants size and be able to use the body-shaper qualities of the garment. As it is, the thick, non-roll band of elastic at the top tends to push any available torso fat into the stomach region and the front "tummy panel" isn't quite strong enough to hold the belly in which means i layer something else over or under to achieve the desired result.

 There are lines and a not-quite-natural look when wearing it under a tight or straight skirt. Some of this is helped greatly by wearing a high-waist spandex briefer over the padded garment.

 I wear a 35 (US) in mens pants so I ordered a 34-36 in this. Fits like a glove but the pads don't wrap around to my butt at all except for "blending" the edges. But.. I didn't want to deal with the hassle of sending it back as I can use it like it is. I think a size or two smaller might give me more butt :)

 I wear a sz 9/10 (US) in women's stretchy jeans and when worn over the pads I have an awesome, natural-looking butt and hips. I think the firm elastic of the jeans helps conform the pads more to my rear.

 I would definitely recommend this to others!