Shahid Kapoor needs to wear bum bags to make his rear look in shape. Shahid, who has worked on achieving a good physique, was still not very confident about his butt. So, in order to make his hips look nice and round, he wears a bum bag, which is a small pouch like thing secured with a zipper and is worn at the waist.
Shahid has been wearing bum bags since his first film in 2003. While he doesn't wear these at home, he needs to wear them during film shoots because he is afraid his near-flat butt will look bad.
Guess everyone has their own little quirks!