Rockin' the house...the US ambassador's house, that is! Taylor Swift, Ed Sheeran and Cara Delevingne do an impromptu gig



It was a very select band performing a very select gig.



And Taylor Swift shared a short clip of her performance at a US ambassador's house on her Instagram page on Thursday.

The 24-year-old country rocker and her friends, UK singer-songwriter Ed Sheeran and British model Cara Delevingne, are pictured singing Heartbeats by The Knife.

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Me and my besties: Taylor Swift is flanked by Cara Delevingne and Ed Sheeran singing at the US ambassador's house in a short video she posted on Instagram on Thursday



And the location is pretty ritzy. She captioned the video, 'Me, Ed, Cara. Singing songs in the US ambassador's house. What is life.'

Unfortunately she doesn't say where the residence is. But the chances are it's in London as Taylor played the O2 Arena on Tuesday, with 22-year-old Ed as the opening act for her Red tour.

Their next gig is in Berlin on Friday before they return to London.

Getting into it: Taylor captioned the snap 'Me, Ed, Cara. Singing songs in the US ambassador's house. What a life.' The Red singer doesn't say what country she's in but it's probably London where she performed at the O2



Making up a trio: The friends sang Heartbeats by The Knife as 22-year-old Ed played the guitar



The trio are pictured in the hall at the bottom of a staircase at the ambassador's house, with Ed playing the guitar. A grand lounge is visible behind them.



The lyrics for Heartbeats go: 'One night to be confused/One night to speed up truth/We had a promise made/Four hands and then away. Both under influence/We had divine sense/To know what to say/Mind is a razorblade.'



The video is just the latest hangout for Cara, 21, and Taylor, according to Beauty World News, adding the two posed for backstage photos at the Victoria's Secret Fashion Show in New York before Christmas.

Why the mask? Cara Delevingne returns home after her night with Swift and Sheeran



The model is also close to American actress Michelle Rodriguez and the couple have frequently been seen out together recently.



On Tuesday the pair went to lunch in the London neighbourhood of Notting Hill before Michelle flew back to New York.

And now they could be spending a lot more time together following reports that Cara has asked the 35-year-old actress to move in with her in London.