Nothing wrong with being a little chubby, but come on. Don't dress like a can of exploding biscuits, as someone else put it.
The sad thing is, while some of the girls who dress like this are obese, most of them are not. Most have normal, curvy, feminine figures. If they wore clothing that fit them properly and didn't show so much skin they would look perfectly nice. Instead they end up looking fatter than they actually are. One has to be really thin and really toned to pull off the exposed stomach look. I'm a size 4 and I would look like a biscuit can if I wore undersized lowriding pants and a small tight shirt. I thought it was just innate knowledge for women that you don't wear clothes that make you look heavier than you actually are. But I guess not.