Lady Gaga joined a drag queen lookalike onstage for a surprise appearance in a Kentucky nightclub before stagediving into the crowd.

The superstar singer joined the six-foot Gaga impersonator in front of frenzied fans for a duet of her latest single Born This Way at The Connection night club in Louisville.

Gaga had just finished playing a concert at the KFC Yum! Centre as part of her Monster Ball world tour on Saturday night before heading over to the nightclub where the Gaga impersonator, Vanessa DeMornay, was performing.

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Gaga took to the stage dressed in a black leotard, round black-and-gold sunglasses and stilettos and danced along to the song with DeMornay before leaping off the stage to indulge in some fairly inept crowd surfing.

Before the show she had gone backstage to say hello to performers in the LaBoy LeFemme drag show.

The next day Gaga repeated the trick at the Round Up nightclub in Dallas, Texas using the dance floor as a stage and was joined by a group of backing dancers.

Still, we imagine she won’t be able to repeat that feat for the rest of her tour – Gaga still has 29 dates left to perform.

Watch Lady Gaga’s drag queen duet here.