Watch: Gracie Abrams and Taylor Swift perform 'Us' live.

Celebrating the release of her new album 'The Secret Of Us', Gracie Abrams popped up as a surprise guest during Taylor Swift's Eras Tour show in London last night to perform their duet 'Us' together live.

Watch some clips of the performance below...

THE SECRET OF ALL SECRETS 😭 us. (featuring Taylor Swift) 💛 Live from #LondonTSTheErasTour 💛 pic.twitter.com/iHGT4h0Dzp

— GracieAbramsHQ (@gracieshq) June 23, 2024

Gracie performing ‘us.’ with Taylor Swift at The Eras Tour tonight in London, UK 💛 (via @augustheads)
pic.twitter.com/ddh88aTIpB

— Gracie Abrams Nation (@GRAClENATION) June 23, 2024