Lady GaGa stunned locals at a pub in London last week (ends31Oct10) by serenading a newlywed couple drinking in the bar.
The Poker Face hitmaker was visiting the The Raven pub in Chiswick, England to unwind after performing in the U.K. as part of her Monster Ball tour.
And after learning that fellow bar patrons Ewan and Julie Searle had recently married, she treated the new husband and wife to a celebratory song.
Julie tells Britain's The Sun, "It was unbelievable. We were toasting our future by drinking champagne and beer with some guys we met in the hostel we were staying at. Then Lady Gaga, dressed in this fabulous cerise dress, came in with her entourage. She stood at the bar and ordered a drink for everyone.
"I said, 'Yes, we got married.' She said, 'That calls for a song.' She asked if anyone could play the guitar. A French friend called Sam - one of the guys from the hostel - rushed back to get his.
"After he came back he spoke with her and her people and they played Gimme Shelter by the Rolling Stones for us in the back room. She was really cool but her entourage stopped anyone recording it. I would have liked a reminder, but then I'm sure I'll never forget it. It was lovely of her."