WATCH: Lady Gaga joins Adam Lambert and Queen onstage during Sydney show
Queen fans received a surprise at last night's Sydney show when Lady Gaga took to the stage.
Gaga joined Queen frontman and ex American Idol contestant Adam Lambert to belt out the hit Another One Bites the Dust, but sadly she didn't stay for a rendition of Radio Gaga – the song by which her name was inspired – although she did receive a special serenade by Lambert during the song's chorus, as she watched from the crowd.
The singer is also currently touring around Australia with her Artpop tour.
Twitter was later abuzz with post show tweets.
Watch Gaga and Queen in action