Sometimes fashion is about clothes, but sometimes it is really about bodies. The Council of Fashion Designers of America awards are the highest honours awarded to US fashion designers, so you would expect the star-studded New York gala to be a showcase for extraordinary clothes. But last week the red carpet was won not by a dress, but by a body. Uncut Gems actor Julia Fox wore a cutout dress that was mostly cutout, with a side order of dress. Baring Fox from her breastbone to her thighs, it revealed a black bikini and highlighted a carved-out, rock-hard midsection, visible ribs and sinewy glutes. Her slender body, not the dress,…