I just got some M4's and Bellisimos for the first time and they are massive. I'm a 29' waist, and their massive. The M4's say 28-40 but their huge on me. I have to tape them as tight as possible and still the front has like 3 inches space.
Surprisingly the Bellisimos, which say that their smallest size is 32 and go to I think 44??, I fit them better. Just wish they didn't both shift when I walk. The bulge and hold amount is both massive.