Kylie Minogue has revealed that she apologised to Pippa Middleton after challenging her to a ‘bum-off’ competition.

The Australian pop icon jokingly threw down the gauntlet when she appeared on Alan Carr’s Chatty Man earlier this year, but she told the Daily Star that she then met the Duchess of Cambridge’s sister soon after:

“I met Pippa at the Jubilee just after I’d been on Alan Carr and joked about having a better bottom then her. We said ‘hi’, she was wearing one of my sister’s Project D dresses, which was lovely, we were chatting and then I just blurted out about our bums.

"She was very gracious and said I would win hands down but I’m not too sure about that.”

The 44-year-old, who this week revealed she may finally get to duet with Jason Donovan at December’s PWL gig, now insists that she no longer holds the world’s best bum crown:

“I think if there was a competition between me, Kim Kardashian and Pippa Middleton for best bum I would come third. I don’t know who would win out of those two girls but I’m just hanging in there. My glory days are definitely behind me, pardon the pun.

“I’m still surprised my bum is still news. I haven’t used a stunt bottom so far but it’s a good option for the future.”