Donald Trump (search) can't get out from under his hair.

The billionaire builder and now TV star of "The Apprentice" (search) let a reporter take a close look at his scalp this week to prove his point — that the flip-flop 'do he has become famous for is all his.

"I don't say my hair is my greatest strength in the world, but it's not terrible," Trump told Newsweek magazine, which published a cover story on the phenomenon of his reality show.

The author of the piece tells how "Trump swoops up his bangs to prove" that he is not wearing a rug.

Donald, who is 57, seems to enjoy the fuss his tresses have caused.

He talked about his hair — he lets only his girlfriend cut it — on "The View" (search) and says he doesn't mind at all that David Letterman makes fun of it.

He'd love to go on Letterman, in fact, but "NBC doesn't want me to do it — they don't want him to get ratings," Trump says.

Newsweek even asked him if he'd had any plastic surgery to preseve his still-youthful look.

Again Trumps swoops up the front of his hair and says: "I've never had a face-lift. You can see. Check. There's no scars."

Further more, Donald is not going to give up talking about his hair anytime soon.

He has a new book in the works called "How to Get Rich" with a chapter called — what else? — "The Art of the Hair."