It’s no secret that Miley Cyrus likes having all eyes on her, but in a shocking new claim, her need for attention has been taken a step too far.

In the new issue of Life & Style, a source claims that the 21-year-old star once tried to make moves on her half sister Brandi Cyrusboyfriend — Christian rocker Sam Hancock.

“She was trying to hook up with him and date him,” a friend of the family tells Life & Style.

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“She was basically trying to steal her sister’s boyfriend, or at least cheat with him.”

Sam grew close to the entire Cyrus clan during the more than two years he was with Brandi, before they split in 2010.

“Miley was sexually active from an early age,” a friend of Brandi’s shares with the mag.

“And it makes sense that she’d try to hook up with Sam. Girls always had crushes on him. He was the lead singer in a band.”

The family friend discloses to Life & Style, “I have seen Miley flirting with Sam.

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“Brandi would always complain about Miley hitting on her boyfriend. She does it for the attention, for the thrill and just to feel like she wins.”

Though a rep for Miley and Brandi denies the story, Miley’s behavior raised eyebrows.

“I’ve seen Miley hit on other boyfriends of Brandi’s,” the source confesses.

“To be honest, I’ve seen her hit on her friends’ boyfriends as well. To be her friend or her sister, you just have to put up with her acting inappropriately like that. That is how she is.”

For more, pick up this week’s issue of Life & Style, on newsstands now.