At what bodyfat level can a gal see her abs?

ok so I been on a diet.. I lost about 30lbs.. I am like 5ft5.5 with like a 26.5 inch trying to get it down to like a 23 inches and my hips are like 33, trying to get them down to 30 inches.. I been doing a lot of excising and want really lean legs, but mine are more on the muscular side, as for my stomach I want to trim that as well.. when I stand up straight and flex.. I can see a little muscle def, but when i am sitting nothing.. I know guys have to be like 8% body before you can see theirs, but how about females?? does anyone know what body level they need to have before they show, and i mean really show... I am going to do that 17 day diet.. anyone else have good tips on losing weight, and good ab workouts