Brush back that mullet and adjust your ill-fitting halter tops folks 'cause Palm's newest webOS device has been spotted at Walmart. This pair of Pixi lovelies was ogled overnight inside one of Sam Walton's finest Tennessee locations reportedly sporting a $400 price tag and little else -- it wasn't in Walmart's system so it wasn't yet available for purchase. Something that should be rectified in time for Sunday's official launch with Sprint ($100 on contract) if not sooner.Filed under: Cellphones