Victoria Beckham has joined an exclusive celebrity gym in LA to help get her into shape for the Spice Girls tour later this year.

Despite claiming she never works out, Posh has become a member of LA's The Sports Club - and she's even signed up to Candlelight Stretch classes accompanied by a live string quartet.

The plan is to tone up ahead of the Spice Girls' gruelling world tour, which is likely to hit 25 dates.

The 33-year-old mother-of-three wants to be in better shape than the rest of the Spice Girls and has even hired a personal trainer.

In an indication of how competitive the girls still are, sources say Victoria made the move after finding out Geri Halliwell has her own trainer in London and has been working out every day.

A pal said: "The girls have always been deeply competitive, especially Vic and Geri. So when she heard Geri has been working out like mad to get back into shape Victoria marched herself into the nearest exclusive gym and signed herself up.