Lady Gaga thrilled revellers at a gay nightclub in London on Saturday (26Oct13) when she turned up unannounced to perform for fans. The pop star took to the stage at the G-A-Y event at nightclub Heaven to sing her upcoming single Venus live for the first time, baring her bottom as she danced onstage in a flowing white dress and long blonde wig. She took to her Twitter.com page after the gig and told followers, "Had an amazing night tonight at G-A-Y in London, after all these years you continue to inspire me." British comedian/actor Matt Lucas, who was among the clubbers who caught the surprise show, also tweeted, "Just saw Lady Gaga do a surprise set at G-A-Y. She got her a**e out and showed her vagina. All agreed it was impressive but we're staying gay."