Do Ya Think I’m Sixty? . . . Rod Stewart, the veteran rocker, will reprise some of his famous songs when he tops the bill at a birthday party for the Prince of Wales next weekend.

The singer has waived his usual £1m fee for performing at private parties to entertain Charles, the Duchess of Cornwall and several hundred guests at Highgrove on Saturday.

The party is being thrown by Camilla to end a week of celebrations for the prince’s 60th birthday.

Stewart will sing You Wear It Well and a selection of other hits, including Maggie May and Sailing.

He is also expected to croon older tunes from his Great American Songbook albums, such as They Can’t Take That Away from Me and It Had to Be You.

“He may do Do Ya Think I’m Sexy? as an encore but it might be a little too raucous for the gathering,” said an insider, who added that Camilla had let it be known that she had the Great American Songbook albums on her iPod.

Charles, Camilla, princes William and Harry and their girlfriends, Kate Middleton and Chelsy Davy, will be joined by friends such as Stephen Fry, the comedian and presenter, Edward Fox and Prunella Scales, the actors, and Jilly Cooper, the author. “[Stewart] is giving his performance as a birthday present to the prince,” said a Clarence House spokesman.

Stewart has previously expressed his admiration for Camilla, saying “she always looks glamorous to me”. He sang at a ball when Charles and Camilla visited Philadelphia last year.

Charles talked in an interview yesterday about whether he would ever succeed to the throne.

“It is all in the hands of the good Lord as to whether I survive – or am vaguely compos mentis,” he told the Daily Mail Weekend magazine.

“Our life is so short and insignificant in the great scheme of things.”

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