I love surprises. From the front, this Mara Hoffman Racer Back Top ($85, originally $121) looks basic, but the back tells a whole other story. The draped slit detail is sassy while the front is laid-back cool. Pull a Carrie Bradshaw by wearing a fun-colored bra and letting it play peek-a-boo in the back. It also comes in black, white, and lime green, so choose the one that pleases your taste.