Crop tops took over Hollywood in 2013. We've seen just about every color, style, and cut a crop top has to offer, from dramatic midriff-baring looks to the tinest sliver of skin. We've rounded up the sexiest crop-top outfits of 2013 — and we want to know your favorite in the comments below!

On Allison: 3.1 Phillip Lim jacket, Velvet top