Solo debut for Posh Spice

Devoted David watched his wife perform her first solo

Posh Spice Victoria Beckham made her solo debut at a huge outdoor charity show in front of 100,000 music fans.

Victoria appeared sporting a new hairstyle at the third annual Party in the Park, held in London's Hyde Park to raise funds for the Prince's Trust charity.

Her husband, Manchester United star David Beckham, was watching from the front of the stage as his wife became the last of the Spice Girls to branch out with her own pop career.

And although he is more used to evading the paparazzi, the soccer idol stood with photographers as he video-ed Victoria's performance.

I haven't been lazy, I've been a mummy

Victoria Beckham

Victoria, 26, was given a rapturous reception as she performed her forthcoming single Out Of My Mind along with acrobatic dance troupe Truesteppers.

But fans were left wondering whether the star was really up to it as she mimed the whole performance.

Victoria's last appearance was with the Spice Girls at a series of pre-Christmas concerts.

"I haven't been on-stage for so long, it seems like a year," she said. "But I haven't been lazy, I've been a mummy."

Travis: brought the rain with opening song

The concert, organised by Capital FM, is the world's biggest annual live music event and is expected to have raised hundreds of thousands of pounds.

All proceeds from the one-day festival will go to the Prince's Trust, which was set up in 1976 by Prince Charles, who was at Sunday's event, to help more than 400,000 young people learn new skills and get back into work.

The event featured a string of top pop acts including Sir Elton John, who got off to a rocky start after a technical failure, Steps, Christina Aguilera, Ronan Keating and Billie Piper.

Opening act Travis tempted fate once again by performing their hit Why Does It Always Rain On Me?

Beckham duet

During the concert Prince Charles took refuge on the stage, where he received a huge roar of appreciation from sodden fans, after relentless rain forced him out of the royal box.

Charles chatted backstage to some of the stars appearing at The Prince's Trust benefit concert, including Posh Spice.

She said: "I was telling him how I was really nervous about performing because this was the first time I've appeared before 100,000 people.

David and Victoria chat to Charles

"He asked me how Brooklyn was getting on and then he asked if David and I had any plans to do a duet. I said `no way' to that."

Other popular acts during the day included Ronan Keating, who played his number one single When You Say Nothing At All and forthcoming release Life Is A Rollercoaster, and Bon Jovi.

Pop princess Kylie Minogue got the crowd going as she performed her disco-style track in a sparkling boob-tube and draped in a gold chain.

Sir Elton John teamed up with US boy-band Backstreet Boys and US teen star Christina Aguilera took a leaf out of Geri Halliwell's show-stopping Brits performance by dressing in a Union Jack outfit as she performed her hits Genie In A Bottle and What A Girl Wants.