Posh's extra half inch - of knee flab

was out doing what she does best - shopping, when the sight of the puckered skin on her left leg was visible.

She joins a growing band of A-listers, such as Kate Moss and Angelina Jolie, who possess unsightly saggy skin on their pins despite appearing to employ zero body fat anywhere else.

However with fellow Spice Girls Melanie Brown and Geri Halliwell in better shape than ever - Beckham is keen get fit ahead of their reunion world tour.

The 33-year-old mother-of-three has already joined a gym in new hometown of Los Angeles, but with her whirlwind travel schedule there has been little time for any push-ups.

Meanwhile, her knees are not the body part to attract attention this week - DJ Chris Moyles quizzed Victoria about her breasts during an interview on his Radio 1 breakfast show.

He said live on air: "Everybody knows they're fake, Victoria, just admit it - we don't have a problem with them."

"Seriously, you go jogging without a bra and they don't move."

A flustered Victoria laughed off the question, saying: "I don't go jogging."

He continued: "I think the surgeon did a great job. I think that you should be really proud of them. I bet David loves them. It's like a big Christmas present come early."

She agreed: "He loves them."

In the past few weeks, Victoria has kept up a busy schedule, beginning with a visit to London on an emergency trip after her father-in-law suffered a heart attack.

She even made headlines in connection with the Diana inquest after she was seen strutting out of the Ritz hotel in Paris moments before the jury were expected at the venue.

She was in the French capital on photoshoot.

In the past few days, she has appeared on a wacky Japanese TV show to promote the reunion.

She looked on bewilderingly as the hosts - Takuya Kimura and Goro Inagaki - launched into a special rendition of the Spice Girls biggest hit Wannabe as well as performing a number of bizarre sketches.