27/01/2015 16:46 GMT | Updated 20/05/2015 10:12 BST

Celebs Reveal Their Childhood Heroes At We Day (Video)

At today's We Day extravaganza, an array of celebrities shared their childhood heroes, with answers ranging from Robbie Williams, to Princess Diana, to the residents of Sesame Street.

A-lister Clive Owen couldn't decide between Liverpool F.C and David Bowie, while X Factor finalist Sam Callahan also went for a musical inspiration, calling his idol Robbie Williams "the ultimate entertainer".

Evanna Lynch, who played Luna Lovegood in the Harry Potter movies, chose J.K Rowling as her personal hero, although she was quick to deny trying to be a teacher's pet. "Her life was so hard for a while, she was so poor and nothing seemed to be going her way - and she kept going."

Laura Whitmore didn't shy away from a bit of flattery, either. She nominated her mum, who she called "the most inspirational person I know". The stars also shared their top advice for youngsters.