Britain's Got Talent contortionist Lucky has left the nation fascinated by her unnerving performance in the semi-finals of the ITV talent show.

After wowing the judges in her first audience, Lucky, whose real name is Leilani Franco, astounded the audience by showing off her flexibility during a performance to a Mad World/Sweet Dreams mash-up.

The 25-year-old London-based bendy brunette stepped it up a gear for the live show with a bizarre nocturnal-themed performance.

Her two minutes in the spotlight mirrored a scene from Alice on Wonderland and came complete with giant ballerinas and toy soldiers.

After impressing the crowd by playing the piano with her feet she went on to make a cup of tea at the "children's tea party" and eat strawberries just using her toes.

Despite not making it to the finals due to take place on Saturday, she received positive feedback from the panel of judges.

David kicked off the comments by saying: "You're very very bendy, very spooky, you're definitely the contortionist to beat in this competition."

Alesha told her that contortionism usually makes her feel uncomfortable but "that was really entertaining, you're so clever."

Simon Cowell said: "I'd like one of you at home, too. It was absolutely brilliant - genius. The whole act was interesting - I loved everything about it. Weird."

Amanda used Lucky's surreal act as an opportunity to tease Cowell. "That's the kind of thing I think you [Cowell] dreams about. Very very weird," she said.

"It felt wrong on so many levels, it was really surreal. Odd but entertaining."

Check out pictures of bendy Lucky here:

Britain's Got Talent contestant left the audience and judges fascinated when she performed her spooky act during the semi-finals (YouTube)