I'm 5ft3 7st10 at 45. Im small build, it suits me, I'm comfortable, healthy and fit.
Due to my age I could easily put on a stone in weight with very little effort by just not paying attention to what I eat, but it all goes round my belly and when you are (quite literally) flat chested, even that little weight round your belly can feel awkward and give you an odd shape. So I do avoid it.