At 5'1", I've always been tiny. At least until I turned 24... It used to be a running joke in my very early twenties that if I ever had kids, I'd finally be able to fit into "Adult Clothing". Yup, I wore kids clothes (at least bottoms) for the longest time. Actually, I still sometimes do, but that's more due to my height than my weight.
I had no hips, no boobs and despite being athletic, I was tiny.