P Diddy and the Princes: the night William and Harry met rap royalty

Princes William and Harry may be masters of pomp and ceremony, but they still know how to play it cool.

The brothers posed for photos alongside pals Kanye West and P Diddy, the Concert for Diana at a celebrity-packed after-show party.

The four greeted each other warmly with Harry putting his arm over P Diddy's shoulder.

Kanye attempted to persuade the Princes to put on the oversized white stripy shades he was wearing, but they jokingly declined.

Working the room in the Wembley Arena, next to the new Stadium where the concert was held, the brothers chatted to actress Sienna Miller.

William gave Jude Law's ex a kiss on both cheeks, while Harry bid farewell with an affectionate hug.

Joss Stone greeted both Princes with a huge hug as they chatted about the night's events.

William thanked Take That for their set, telling them: "It was amazing."

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"I think it's just been a really nice day."

Jason Orange said after speaking to Harry about when the Princes took to the stage added: "He was being very genuine and humble and he was saying he was nervous stepping up to the mike.

"He wanted to get it right.

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"They said they had loads of fun."

Sir Tom Jones said the Princes had a great night.

The Welsh star said after chatting to them: "They thought it was wonderful. I was so pleased to be part of this day. I was so glad it went so well."

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"They wanted to do it and they pulled it off," Sir Tom said.

William sipped a glass of champagne as he spoke to the artists, but Harry clutched just a glass of water.

Among the other performers in the room were Duran Duran, Natasha Bedingfield, Orson and numerous other artists. Afterwards the Princes headed to the main after-show party at the Arena.