I find one of the problems with tops for bigger ladies is that often they seem to just take a top designed for slim people and make it wider, without making it any longer so with the combination of the horizontal stretch and a few washes in the machine, they magically transform into crop tops and I think that's why you see women walking round tesco with a roll of jiggle on show.
It's a pet peeve, I must have 20 tops that are relegated to bedwear because of this.