Emma Roberts jokes about familys toothy trait

Julia Roberts' 20-year-old niece also revealed that she had her eyebrows waxed when she was just seven years old.

The actress told Women's Health magazine that her mother – schoolteacher Kelly Cunningham – made the decision after she was teased for having bushy eyebrows.

Roberts, who appears on the cover of the US fitness magazine, says: 'When I was seven, this boy at school told me, 'You look like a Neanderthal'. My mum was like, 'OK, let's take you to get your eyebrows waxed'.'

The former Unfabulous star – who made her movie debut aged 10 as an extra in her Aunt Julia's 2001 film America's Sweethearts – is currently promoting her upcoming movie Scream 4.

'I watched half of the first movies from under a blanket,' says Roberts, who was just five years old when the first Scream movie was released in 1996.

Talking about the new film, which is due to be released in the US in April, she said: 'We did a lot of chase scenes in the movie and I'd get so freaked out. Even though you know it's not real, part of you still has this scary adrenaline rush.'