"I'm quite strong and toned underneath": Kelly Brook...

... has a manic work schedule and reveals she has vitamin injections in her BUM to help give her a lift. "A vitamin B12 shot in the bum does the job! They make you feel amazing - you go from a little bit groggy to 'ding!' It's probably not that sensible ...

http://www.mirror.co.uk/3am/celebrity-news/kelly-brook-reveals-secret-behind-1812784