has an overall appearance of being round especially around the waist region, the stomach are large, the hips are wide, and upper thighs are full. The bottom could be full or flat.

X body shapes (hourglass figures) have defined waists, but their shoulders and hips are the same width (unlike the A who has wider hips than shoulders).  There is a longer straighter slope from waist to hips (unlike the high shelf-like curve of the 8 shape).