The eager spectators at a charity event in Las Vegas on Friday were easily fooled by Lady Gaga's impersonator. The invitees of a national conference for Women of Global Change held at The Strat Hotel and Casino were shocked when they saw the pop-queen stroll onto the stage in a pink pantsuit and matching the wide-brim hat. She then sat at a grand piano and belted out some of her biggest hits like 'You and I' and 'Million Reasons.'

According to The Hollywood Reporter, the interesting part was who the audience were actually watching was Tierney Allen, a Lady Gaga impersonator who performs regularly in Legends in Concert, a tribute review at The Tropicana that also features Freddie Mercury and Pat Benatar lookalike/soundalikes. When contacted by The Hollywood Reporter, Allen says she had no intention of misleading the audience into thinking she was really Gaga.