Katy Perry has been shamed for going braless as she shows off her weight loss in a slinky, glittery dress and heels.

Another wondered why she suddenly felt the need to eat. "Why is Katy Perry’s dress making me hungry," the user asked, placing Perry's photo beside a doll in a cake shaped like a dress.

Discover viral Katy Perry moments, including her all-female space flight, Met Gala outfits and responses to internet conspiracies ...