Miley Cyrus Finds Her Head Has Grown Too Big For 'Hannah Montana' Wig [Exit Strategies]

Our spies on the set tell us Miley has bragged that she will get fired, making it clear she wants to focus on singing and not the show. For his part, Billy Ray has also made it clear that there is more money in singing than a Disney cable show. As a result, the father-daughter team has been showing up to the set ridiculously late, stalling production and infuriating cast and crew.

Emily Osment, who plays Lilly Truscott, used to be extremely tight with Miley. Now we're told Emily is so bitter she literally turns away from Miley after each scene. We're told Emily's dad got in a screaming match with Billy Ray, complaining he and Miley were unprofessional.

Sources tell us Billy Ray has told people on the set that he and Miley will do 12 more episodes and then they are out. Disney was so pissed they called his agent, railing that Billy Ray and Miley were ingrates. Disney insisted that Billy Ray and Miley not only finish the 24 episode season — but Disney was adding six more episodes.

Cyrus denies the report, telling People that she is "fully committed" to Hannah Montana, but Disney is no doubt buzzing over the rumors. Be careful, Miley: though a career outside Disney may seem enticing, that Toluca Lake waitress who bears a striking, saddened resemblance to a certain ex-Lizzie McGuire star may have a few regretful words on the subject.

[Photo Credit: AP]

• Disney to Miley: Face the Music or Else! [TMZ]

• Miley Cyrus 'Fully Committed to Hannah Montana' [People]