Forget cold-shoulder knits and crop tops - fashion's newest obsession is the backless sweater. Coming in a range of styles from subtle slits to ribbon ties, this peek-a-boo trend is the only way to wear your knitwear this season. Choose from bright and neutral round, V-neck and turtleneck styles by TOPSHOP, Helmut Lang, Toga and more to find your favorite. Wear yours with floral-embroidered jeans and slides for an easy, stylish look.