Boys and girls look like each other before puberty, but after puberty women gain their womanly figures. Beyond the reproductive changes that happen, this means gaining weight all over, but especially in the thighs and butt. This is what makes you sexy, literally. When you become sexually mature you gain weight in places where men don't. They gain weight in their waists, generally.
Women also gain weight in their waist, too, though.
The point is, models today look like children and men in drag. The ideal women' s body is a non-woman's body. Don't let them get away with it. Get pissed, and get strong. Okay, this concludes the anti-fashion industry rant portion of the program.