Miley Cyrus and Patrick Schwarzenegger "balance each other out".

Miley Cyrus and Patrick Schwarzenegger

Miley Cyrus and Patrick Schwarzenegger

The 'Wrecking Ball' hitmaker has got the seal of approval from her sister Brandi, 27, who thinks the star's boyfriend is a "good dude".

Brandi said: "I think she met him through her mutual friend, but we've hung out with him a ton since. He's been great. He's such a nice guy. He's easy to hang out with and be around. He has great friends. He's a good dude.

"I like that they balance each other out. Miley is like a big personality, high energy, and he's super laid-back and easygoing. And they are a good team."

And Brandi thinks the loved-up couple are perfect for each other because they come from similar backgrounds.

She added: "He comes from a big family too. He's got a sister and I think he fits in so well because he kind of comes from the same life we did.

"He has a famous dad [Arnold Schwarzenegger] and stuff. I mean he gets it."

The pair's relationship was rumoured to have hit the rocks recently after Patrick, 21, was seen getting close to his ex-girlfriend but whilst Brandi thinks it's hard to "keep up" with their relationship, she believes things are most likely OK between the couple.

She told Us Weekly magazine: "As far as I know yes, [they're doing OK].

"But you know you never know. Things change every day with everybody. It's hard to keep up."