Miley Cyrus has praised fellow Disney star Zac Efron, describing him as “the hottest person in the world”.

The Hannah Montana star told Sirius XM that she was a big fan of the actor, who dates Vanessa Hudgens.

"I think Zac Efron is the hottest person in the world," Cyrus said. "I really, really like him.

“It's weird because he's my friend...I could call him and be like, whatever."

But Cyrus, who is currently single, said she had no plans to go after Efron – she just admires his loyalty to his girlfriend.

"Zac could get any girl...and do whatever, and he is so loyal and a really good friend...He's just like super good looking,” she said.

The 17-year-old also said she was confident she could keep her cool around Efron, adding: “I'm pretty much the coolest person ever."

Miley Cyrus