US presidential candidate Donald Trump has been caught out boasting about how he was the only man allowed backstage to 'inspect' naked women at the Miss USA pageant because he owned it.

The Republican nominee bragged about the extra power he had during an interview with Howard Stern in April 2005, the tapes of which have been released by CNN.

"I’ll tell you the funniest is that I’ll go backstage before a show and everyone’s getting dressed. No men are anywhere, and I’m allowed to go in, because I’m the owner of the pageant and therefore I’m inspecting it…. "Is everyone OK"? You know, they’re standing there with no clothes. And you see these incredible looking women, and so I sort of get away with things like that," Trump said.

Trump's own comments appeared to support allegations made against him by a contestant in the 2000 Miss USA pageant.

Bridget Sullivan told Buzzfeed earlier this year that the then-owner of the pageant walked through the backstage area to wish contestants good luck, despite the fact many of them were naked at the time.

"The time that he walked through the dressing rooms was really shocking. We were all naked," Sullivan said.

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Sullivan went on to describe Trump as a "creepy uncle", saying he would "hug you just a little low on your back."

The allegation against him and comments Trump made to Stern are similar to what he said in 2005 on an Access Hollywood set, where he bragged about being able to do "anything" to women because of his fame.

"You know I’m automatically attracted to beautiful -- I just start kissing them. It’s like a magnet. Just kiss. I don’t even wait. And when you’re a star they let you do it. You can do anything. Grab them by the p***y. You can do anything,' he was recorded saying to Billy Bush.

Trump owned the Miss USA pageant from 1996 to 2015.