Walking across the paddock at a racecourse in the 1980s, Princess Michael of Kent  distinctly unamused to find herself on the receiving end of a wolf whistle.

Although the culprit was never confirmed, the finger of blame was immediately pointed at the live wire Sarah, Duchess of York, who was seen laughing in the vicinity with her sister-in-law, Diana.

But could the lady behind the whistle have been the equally high-spirited Princess of Wales, for according to Duran Duran star Simon Le Bon, it would seem the cheeky Princess had form.....

Speaking to the BBC’s Radio Times magazine to promote the Corporation's coverage of next Sunday's Concert For Diana, the singer (pictured with the Princess) has recalled his embarrassment at the moment the future Queen let out a wolf whistle in his direction.

Explains Le Bon: "She and I used to go to the same fitness club - Chelsea Harbour in London. One day I was on the running machine. I jumped off because one of my shoelaces had come undone, and she wolf-whistled at me across the room, and yelled, like a brickie, 'Nice legs! I'd recognise that bum anywhere!'"

Says the star, whose band was a favourite of the young Princess: "I was quite taken aback, actually, and quietly got back on the machine with a red face."