I'm 4'10, 48kg, with big thighs/hips for my size/height haha. I got the F1 and the pants fit well in the hip area but are a little long. The top is very long. Although, I think I can just shrink it in the dryer and it'll fit fine. But for reference to those similar to my body type, F0 fits PERFECTLY on me! :) Regardless, super cute gis!