Her role on the judging panel of X Factor USA still hasn't been officially confirmed but Britney Spears is already in the firing line about her ability to judge pop wannabes.

Outspoken 'shock jock' Howard Stern - who is a heeeuuuuge name in the States - made his feelings known at a press conference for America's Got Talent, which he'll be replacing Piers Morgan on for the next series.

Speaking about Britney taking Nicole Scherzinger's seat on The X Factor he said: "Well, I think it's a wonderful decision. Britney still thinks the earth is flat. I don't anticipate great opinions from her.

"I think she's [going to] sit there like J.Lo, 'Oh, you're wonderful, you're terrific. You think I can get a perfume endorsement out of this?'"

Ouch.

Despite this, the DJ said he'll still be tuning into the show because he thinks Britney will be a 'train wreck'.

"As far as any real criticism, I think Simon Cowell and L.A. Reid will do that," he said. "I think Britney will sit there and eat a lollipop and wear a sexy outfit... I'll tune in to see what kind of train wreck she is, absolutely."

Britney is believed to have signed on the dotted line for a whopping £9m which will see her take a place on the panel alongside Simon Cowell and LA Reid.

A fourth judge - replacing Paula Abdul - has yet to be announced for the next series which is due to hit screens in September.

A source recently told E! News: "The contract is signed. There's been a lot of back and forth over the past few weeks as they negotiated the small details, but [Britney's] on.

"This is the perfect next stage in her career. Both Britney and Simon are very excited to work together."

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