Vogue's annual "shape" issue is currently on stands with Rihanna gracing the cover. For many of us, we come in different shapes and sizes. As for Vogue and their models, they come in different skinnies - athletic, lean, tall, etc. You get the picture - shape means the figures most of us are trying to achieve. Take a look at Gisele's post baby abs, Daria's excercise routine for her kneecaps (yes, you read that right) and Joan's gluteus maximus in this video.