Victoria Beckham has hit back at claims that her ultra-skinny frame is achieved with the help of diet pills.

The former Spice Girl is so outraged at the accusations she is taking the British publication that made the claims to court.

"It's such an irresponsible thing for someone to say. Lots of young girls do look up to me, and I just think it's ludicrous that they can completely make something like that up,” she tells The Sun.

"You have to take these things really seriously. There are young girls out there who will think it's cool to take slimming tablets. Things like that are dangerous and we were furious with it."

In fact, Victoria has revealed how her move to L.A. has had a positive impact on her health – prompting her to eat more, run 4 miles a day and quit her expensive shopping habits.

“I run four miles, seven days a week," she explains. "I feel energised and healthy — there are really nice gyms here and I just enjoy it.

"I need that self-discipline to get up in the morning, drop the kids off at school then go to the gym. I can think properly then go home and do some work. But I do feel so much better, she explains.”

Find out which other ultra-skinny stars could do with following Posh's lead here.