Honestly, I don't remember seeing any healthy weight woman with a really thick waist. From what I've seen, if they're thick, they're overweight. There might be some who naturally have a thick waist, but they must be pretty rare because I don't remember ever seeing one, and I'm not -that- blind. I really do think females are just made to have thicker waists.
Of course, lots of guys (and not-actually-guys) are that way as well. But not as many as girls. A minority, even, I think.
Sigh, how I wish I were just fat because I've been acting unhealthy, and all I'd need would be some dieting and exercise. Nope, nature had the wicked idea to make me big everywhere. Being born and living fat sucks.