Victoria Beckham reportedly had her breast implants removed to stop her boobs falling out on the Spice Girls tour.

Victoria, also known as Posh, was worried her ample bosom may pop out of her tight Roberto Cavalli outfits while performing the band's dance routines and decided to have her implants taken out to avoid any embarrassing wardrobe malfunctions.

A source is quoted as saying, "There is speculation she had her implants taken out for the tour so she can fit into the costumes without the risk of them falling out during some of the more energetic routines."

Victoria, 33, previously denied having a boob job until court papers were released in 2005 proving she had undergone surgery.

Last week, Victoria - who is the only member of the group not to perform a solo track on the reunion tour - defended her vocal talents.

She said, "I'm no Mariah Carey, but I can sing. It became very obvious from the start that I was never going to be the best singer or the best dancer or the best actress. I was never a 'natural.' You know, I've never been that good at anything, to be completely honest."

The girls continue their tour in Las Vegas tonight before starting a 17-date stint at London's O2 arena on December 15.