Lady Gaga is set to make a surprise appearance at The Rolling Stones 50 And Counting tour this weekend.
The Born This Way singer will join the rockers on their 50th anniversary tour spot at The Prudential Centre in Newark, New Jersey on Saturday December 15, along with Bruce Springsteen and The Black Keys.
The Rolling Stones said: "We're excited these extraordinary artists, Bruce Springsteen, Lady Gaga and The Black Keys, have agreed to help celebrate our 50th anniversary as we share the night live with our fans all over the world.
"Now the fun begins of trying to figure out the best songs to perform together."
In a historic commemoration of the event, the gig will be available to watch on Sky at 2am on December 16.
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