If you’re curvy on bottom: Too-tight shorts are never a good idea. Try a short that leaves room in the hips and thighs, more a like a boyfriend style. I like to wear a jacket with mine to add a little structure to the look.
If you have a small waist: Go for a high-waisted pair to show off your middle.
If you have a boyish/straight-up-and-down shape: You gals usually have the best legs, so focus on them. Cut-offs are a perfect match. You can go super short, but add a flowy top to balance the look.