7 Dresses That Give You a Flat Stomach

The "Hey, Were You an Extra on Revenge?" Dress

Look ready for business—even if that business is crashing a Hamptons luncheon à la Emily Thorne—in this modern take on the classic sheath. The navy cap sleeves and slight peplum skirt act as counterpoints to the skinny aqua belt, creating a subtle yet captivating hourglass. It's two parts lady, one part sass.

$40, JCPenney.com