If there's one good excuse to miss a day at work, it's your wife going into labour. However, not all of us are lucky enough to have a world-famous pal to call on to cover your shift.

Luckily for James Corden, his chum Harry Styles was available to host his show with just 2.5 hours notice last night, after Corden's wife Julia went into labour with their third child. 

Their daughter was born healthy and happy and Styles was commended for his work, interviewing Owen Wilson, Jane Krakowski and Joel Edgerton on the show.

Watch clips of Styles doing his thing below: