Clothes with super powers–You sweat, and the shirt changes

New "Smart" Clothes Promise to Burn Calories, Evaporate Sweat. Next Up: Tracking Your Pulse

Bagir's suit has a lining that wicks away sweat and prevents odor.

Uniqlo's underwear features plastic dots that are meant to improve the wearer's posture.

Retailers are coming out with clothes that respond to the body on a sensory level. WSJ's Andy Jordan reports on tee-shirts that "speak", and underwear that helps users supposedly lose weight.