X FACTOR reject Emma Chawner has walked out of “fat camp” while filming for a diet show.

The 20-year-old and her elder sister Samantha were taking part in a new six-part television series hosted by Lorraine Kelly.

The Chawner family, originally from Ramsbottom, have been dubbed the fattest family in Britain — weighing more than 90st in total.

As part of the show, the sisters were sent to “fat camp” in Somerset for a month.

But after two days, Emma, who weighs 17st, tried to quit after being forced to walk 10,000 steps a day.

The Chawners, including mum Audrey and dad Phil, say they are too fat to work and receive £25,000 a year in benefits.

They now live in Blackburn after being evicted from their Ramsbottom home after neighbours’ complained about late-night karaoke sessions.

Lorraine Kelly’s Big Challenge is on The Biography Channel in the new year.