Leighton Meester reported to the NYC set of Gossip Girl, but before she got into costume, she showed off this fabulous Proenza Schouler purple chain wallet ($785). What makes this a must-have bag, besides its rich color, is the fact that it has a built-in wallet and a mirror. It's perfect for those times you don't want to lug around a bunch of stuff and want to be hands-free but still majorly stylish. And the purple hue ensures that you can even carry it through Fall and Winter to inject a pop of bright color into your moody looks. If purple isn't your color, the bag also comes in red and black.