Concert For Diana

Britain's Prince William (center) and Prince Harry smile during a visit to the new Wembley Stadium, London, on Saturday June 30, 2007, the day before the new venue hosted a concert in memory of their mother, Diana, Princess of Wales. Coverage of the concert was expected to reach a global TV audience of hundreds of millions.

Prince William and Prince Harry, left, visit the new Wembley Stadium ahead of Sunday's memorial concert for their mother, the late Diana, Princess of Wales, in London, Saturday June 30, 2007. Elton John, Duran Duran, Rod Stewart, Lily Allen, Kanye West, Rod Stewart are among the artists who took to the stage on Sunday, July 1, which would have been the Princess's 46th birthday.

British singer Elton John opens the show with his classic "Your Song" at Wembley Stadium in north London, July 1, 2007, as 60,000 revelers joined Prince William and Prince Harry for the six-hour long extravaganza in memory of their late mother, Princess Diana.

Singer Lily Allen struts her stuff on stage at the Concert For Diana at Wembley Stadium in London on July 1, 2007. Prince William, who turned 25 on June 21, predicted it would be "an incredible night" of music. Police were on high alert as the huge concert got under way, a day after Britain raised its security threat level to critical.

His Royal Highness Prince Harry, right, and his girlfriend, Chelsy Davy, smooch during the Concert For Diana at Wembley Stadium on July 1, 2007, in London, England. Prince William's ex-girlfriend, Kate Middleton, attended the concert but sat in a different section.

Duran Duran frontman Simon le Bon performs on stage at the Concert For Diana at Wembley Stadium on July 1, 2007, in London, England. On-air hosts for VH1, which televised the concert, estimated the worldwide audience at 500 million viewers.

Nelly Furtado performs at the Concert For Diana on July 1, 2007 in London. Prince Harry and his brother Prince William were caught on camera dancing enthusiastically -- if not quite rhythmically -- to Furtado's set, which included "Maneater," "Say It Right," and "I'm Like A Bird."

Fergie performed "Glamorous" and "Big Girls Don't Cry" at the Concert For Diana held at Wembley Stadium in London on July 1, 2007.

Diana's Legacy — Leon Neal/AFP/Getty Images

Prince William gets his groove on during the July 1 concert he and brother Prince Harry organized in memory of their mother, Princess Diana, who would have been 46. The concert was held at London's Wembley Stadium amid high security.

Rapper, singer, producer and songwriter Pharrell Williams performs on stage at Wembley Stadium in north London on July 1, 2007, during the Concert For Diana.

Joss Stone always performs barefoot, even at a royal event like the Concert For Diana on July 1, 2007, at London's Wembley Stadium.

Joss Stone and Tom Jones perform the soulful song "Ain't That A Lot Of Love" on stage at the Concert For Diana at Wembley Stadium on July 1, 2007, in London, England.

Members of the English National Ballet perform a scene from "Swan Lake" at the Concert For Diana on July 1, 2007. Diana, who studied ballet when she was young, was a huge fan and patron of classical dance.

Natasha Bedingfield belts out her song "Unwritten" at the Concert For Diana on July 1, 2007, at London's Wembley Stadium.

Prince Harry, center, his girlfriend, Chelsy Davy, left, and Prince William, right, wave their hands up in the air and shake their bodies like they just don't care at the Concert For Diana on July 1, 2007, at London's Wembley Stadium.

Singers Josh Groban, left, and Sarah Brightman, right, perform a song during a medley of tunes from Andrew Lloyd Webber's stage musicals at the Concert For Diana on July 1, 2007, in London. Princess Diana loved the theater.

Rod Stewart kicks one of several soccer balls during his performance at the Concert For Diana on July 1, 2007 in London. The event raised funds for charities supported by Diana, and her sons who have followed in her philanthropic footsteps.

Kanye West performs on stage at the Concert For Diana at Wembley Stadium on July 1, 2007 in London.

Rapper Diddy keeps it moving during his performance at the Concert For Diana at Wembley Stadium on July 1, 2007 in London.

Soccer star David Beckham on stage to introduce the final performance at the Concert For Diana at London's Wembley stadium on July 1, 2007. Beckham received a huge ovation from the crowd.