A Workout Dress: Old Navy Sleeveless PowerSoft Performance Racer-Back Mini Swing Dress You can do anything in a dress. Specifically, this Old Navy Sleeveless PowerSoft Performance Racer-Back Mini Swing Dress ($35, originally $45) which comes in a bunch of different colours and was made to move with you. Image Source: oldnavy.gap.com Old Navy Sleeveless PowerSoft Performance Racer-Back Mini Swing Dress $35 from oldnavy.gap.com Buy Now