Miley Cyrus might not be the caring, sharing big sister we all thought she was after becoming all territorial over rumours that her younger sister Noah is being groomed to take her place as Hannah Montana.

The teen star has hit out at rumours that she’s being replaced, but admits the nine year old would love the role.

As superstar Cyrus takes on more TV and movie roles, it has been rumoured her stint playing the teenage pop star with a double-life is coming to an end, and her youngest sibling – who has made a number of guest appearances on the kids show – is hotly tipped to take her place.

But Miley insists as much as Noah would love to replace her, she’s not ready to give up Hannah Montana yet. The 16-year-old says, “It’s not true, but she’d like it. She likes the wig (that Hannah Montana wears) a little too much. She’s turning into me slowly but surely.”