Beyoncé, Justin Timberlake for secret London gig?
The singers are believed to be playing a secret show at Islington's The Garage in London on Easter Sunday (March 31).
Rumours about the show have been circulating online after artists tracking website Songkick posted details of the event, before quickly removing them, reports The Sun.
Some fans have also revealed that they have been invited to the event - with the venue's capacity at just 500 - by posting their alleged invitations on social networking sites.
Beyoncé and Justin Timberlake have been openly working with each other on their respective albums, though it's unknown whether a new collaboration has been recorded.