Lakeside Shopping Centre in Essex gave the prizes to the first 100 women to turn up on Sunday morning in nothing but their bra, panties and high heels.
After getting the gift card the girls who had dared to bare were then encouraged to hit the shops and buy themselves a new outfit.
However, while women had already got a pair of hight heels on, a surprisingly high number of them headed straight for the shoe shops… which must have made their walk home interesting.