Lady Gaga plummets off stage in a fan's arms during Vegas show

Lady Gaga fell head over heels off into the audience during the latest date of her Las Vegas residency.

The star had invited a fan called Jack to join her on stage and jumped into his arms - but he lost his footing and the pair plummeted to the floor.

"We legitimately thought she was dead," wrote one audience member on Reddit, according to BBC News.

Instead, Gaga returned to play Million Reasons with Jack at her side. "It's amazing," she said. "We love each other so much we fell off the damn stage."

"We fell into each other's arms. We're like Jack and Rose from Titanic.

"I suppose we should have some tea after that."

Fans were concerned for Gaga's wellbeing as she lives with fibromyalgia, a rheumatic condition like arthritis that can impair the joints, and cause chronic pain.

In 2013, she had to cancel her Born This Way tour after fracturing her hip.

But the singer shrugged off Thursday night's fall, calming the audience as security guards helped her to her feet.

"Everything's OK," she said. "The only thing that's not OK is we need some stairs for the damn stage so I can get back up."