Hannah Montana star Miley Cyrus is amazingly on course to be a billionaire by the end of the year.

Despite being only 15, the Disney TV star has already made it to the top of the Highest Earning Kids list.

A Disney spokesman says, "Kids are earning more and more and can command huge fees in Hollywood, but no one could have predicted how popular Miley would be. She's a true star."

However, Miley says she’s only allowed $300 a week from her singer dad Billy Ray, with her mum Leticia confirming, “A lot goes into her investment fund, which she can't touch until she's 18."