Gotta love Mother Monster!

Lady Gaga, who is in Australia for her ArtRave tour, made a surprise appearance during Queen + Adam Lambert's show in Sydney last night! She performed "Another One Bites The Dust" alongside Adam and the legendary rock band.

"Tonight I felt alive in a way I have not before. I returned to the Radio GaGa mothership to pay homage to my leaders. It was emotional and wild."

"Me, Dr. Brian May, Adam Lambert in plain site with the whole gang. #anotheronebitesthedust for this New Yorker #dreamscometrueItellyou."