Leigh thinks it's hard growing up when there's so much pressure to look thin and pretty.
And in her report she says it's wrong that young girls feel they have to diet to look like their favourite stars.
"I think a lot of girls are put under pressure from an early age to look good.
This includes being slim.
Starve at school
Many of my friends are on a diet and they're only 12 and 13 which is horrible to watch.
They don't have their lunches at school or any snacks, therefore starve!