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VIDEO: Lady Gaga surprises Gaga impersonator on stage

Every single person who has ever attended a Lady Gaga impersonator show has hoped and prayed the real Lady Gaga would appear -- and on Saturday night, according to TMZ, it actually happened in Kentucky.

After playing at the KFC Yum! Center in Louisville, Gaga hit up a gay bar in town called Connections. Gaga popped up on stage around 1:15 AM, right in the middle of her hit song, "Born This Way."