Piers Morgan apologized Wednesday for introducing Paul McCartney to Heather Mills and dissed fellow "America's Got Talent" judge David Hasselhoff's spray-on tans.

Morgan told Howard Stern on his radio show that he didn't know Mills would turn out to be a "grasping, gold-digging little bimbo ... I was fooled into thinking that she was a good person."

The acid-tongued Brit also hassled the Hoff, calling his co-judge a "tool."

Morgan recounted a day when Hasselhoff "went out and got a spray tan in the middle of the shoot, so it looks like he tanned during a commercial break.

"His face had gotten orange," Morgan said. "The audience is going to say, 'Well, David Hasselhoff has gotten a tan halfway through the show.'"

Morgan is a former British tabloid editor and the winner of Donald Trump's "Celebrity Apprentice."