"The One Where They Get Back Together" is finally upon us - and the cast of Friends will be joined by famous fans from Justin Bieber to David Beckham, HBO Max announced Thursday.

The long-delayed and much-hyped reunion billed as an "unscripted celebration" of the US smash hit television sitcom, will debut on 27 May, the streaming platform said in a statement.

A brief trailer for Friends: The Reunion showed the six cast members walking slowly away from the camera with their arms linked together, while the iconic I'll Be There For You theme song plays gently in the background.