Miley Cyrus and Patrick Schwarzenegger

Miley Cyrus and Patrick Schwarzenegger

Miley Cyrus and Patrick Schwarzenegger enjoyed a karaoke night with their celebrity pals.

The 'Wrecking Ball' hitmaker and her 21-year-old actor and model boyfriend showed up at the opening of The Blind Dragon, a new karaoke lounge in Los Angeles.

Patrick arrived a little earlier than his 22-year-old girlfriend and greeted her with a warm welcome.

A source shared: "When she arrived, they hugged and kissed.

"They went into the karaoke room with celeb friends. They were very cute, smiling at each other, holding hands, very much in love."

The couple - who have been dating since November - enjoyed a karaoke sing-off against their celebrity friends including Kendall Jenner, Cara Delevingne and Martin Garrix, but Miley came out on top.

The source added to People magazine: "Miley brought down the house."

Other celebrities seen at the club included the couple's good friend, Cody Simpson and his girlfriend, Gigi Hadid as well as 'Cougar Town' star, Courteney Cox.

Meanwhile, Patrick must be sure about his relationship with Miley, as it may cost him £32 million.

He is believed to have been ordered to stop the couple's relationship, or risk not getting his hands on the trust fund that his parents - Arnold Schwarzenegger and Maria Shriver - set up for him for when he turns 25.

A family friend shared previously: "They are both convinced she is a negative influence on their son and are determined to end the relationship.

"Maria especially is hoping the shock tactic of threatening to cut him off financially will scare him into giving Miley the elbow.

"He and his mom had a huge argument during which he told her she and Arnie could stick their cash 'where the sun don't shine'. He said he'd rather be with Miley than have the money.

"It's upsetting for Maria and Arnie because they fear Miley will lead him astray, then break his heart."