During Lady Gaga's concert at Paris' Le Zenith on Monday (Mar. 7), Katy was captured on camera covering a portion of Gaga's "Born This Way," which is currently enjoying its third week at No. 1 on the Billboard Hot 100.
Perry's version was more stripped down than the disco-reviving original, however, as the "Firework" singer was accompanied by two acoustic guitars.
Watch Katy Perry Video:(i kissed a girl)
