Mango released its Pre-Fall 2011 lookbook yesterday. The collection is chock-full of casual separates and accessories to transition your wardrobe into fall. Look layers, and lots of it. Cable knit sweaters and cardigans are layered atop patterned button down shirts; long and short trench coats make a resurgence and dress up casual looks like cropped denim jeans. Plaids, florals and metallics come in the form of cropped trousers and shorts. Look out for leopard and red suede accessories.