Miley Cyrus: I Am Fully Committed to Hannah Montana

I am fully committed to Hannah Montana. It's what gave me this amazing opportunity to reach out to so many people, Miley Cyrus told People, adding, "I couldn't do it alone. We have an amazing cast that is so supportive, including my dad who has been there for me every step of the way."

Reports circulated over the weekend that Cyrus, 15, and her dad, Billy Ray Cyrus, have been causing drama on the Disney Channel set by coming to work late and openly talking about wanting to get fired, TMZ reported. There were also rumors of a rift between Miley and her costar, Emily Osment.

A Disney Channel rep called talk of on-set drama "just gossip," according to People, while a source close to Miley Cyrus said, "It's a lot of craziness. Emily and Miley are like sisters. Occasionally they have disagreements but they make up and they never let it effect their work."

"Miley is really devoted to the show and she's really upset by the gossip," the source continued, according to People. "Miley is never late to work. Every minute of her day is planned out. When she's not shooting the movie or the series, she's recording the [Hannah Montana] soundtrack. She has a lot invested in Hannah Montana. It's not going away any time soon."

Cyrus is currently in the middle of filming the third season of the hit show, Hannah Montana, and if Disney moves forward with a fourth season, she is contractually obligated to be a part of it, E! Online reported.

"I'm really excited about our new season," said Cyrus, according to E! Online. "We are making great new episodes that I can't wait for our fans to see, and I'm looking forward to the Hannah Montana movie that will be out in the spring."