Er, One Direction - What's Happened To Niall And Zayn?!

One Direction stars Harry Styles, Liam Payne and Louis Tomlinson have starred in a new promo for pal James Corden’s US chat series The Late Late Show.

The trailer, which got its first play during the Grammy Awards last night (February 8), sees the trio line-up alongside Corden and funny man Reggie Watts.

As the lads introduce themselves, all is not what it seems as Watts says his name is Niall Horan and Corden takes Zayn Malik’s place in the boyband. 

The Late Late Show With James Corden is set to premiere on March 23, with Watts announced as the programme’s bandleader.

The former Gavin & Stacey star recently spoke about his feelings over fronting the series, with the 36-year old confessing: “It's daunting, don't get me wrong. 

“Looking at the sign there [above the stage] with my name on it is enough to make me throw up on my own self."

Let’s hope that doesn’t happen when James takes over from full-time host Craig Ferguson next month…