Mostly they seem to have itsy-bitsy size clothing. There was a time I fit in size 5....but not anymore.
I quit smoking, started eating more and not healthy more...candy more, living a much more sedentary life (not walking kids to and from school) and I gained...60 lbs. considering I started at 110, that's a heck of a lot.
I tried dieting and exercising and while it helped with my breathing, no loss of weight. Now, I've started babysitting which means carrying around a toddler, doing stairs a lot more, out for walks, and not eating junk all day. I'm still not losing weight, but I seem to be redistributing it. Clothes that were to tight last summer fit well.