Who Said- Hannah Montana

"I am fully committed to Hannah Montana . It's what gave me this amazing opportunity to reach out to so many people," Cyrus tells 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."

Over the weekend reports circulated 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. There were also rumors of a rift between Miley and her costar Emily Osment. A Disney Channel rep calls talk of on-set squabbles "just gossip," while a source close to Miley Cyrus says: "It's a lot of craziness." "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.It's not going away any time soon." Phew. Miley's blond wig and catchy dance tunes aren't going anywhere. Children breath a sigh of relief our favorite pop sensation Hannah Montana is here to stay! :]