When 'Jo' (Dodie Marshall) asks 'Ted' (Elvis Presley) to drive her home from the club she is clearly wearing a red dress, but when they arrive at her house she is in a striped top and white trousers.
(at around 9 mins) After the "love machine" song, Elvis puts the Fender Jazz bass down on a seat and a moment later, in the next shot, it reappears in his hand.