Sam Smith joins Fifth Harmony and James Corden in the latest Carpool Karaoke

British singer Sam Smith jumped in James Corden's car for the latest episode of Carpool Karaoke.

Together the stunning singers created unbelievable harmonies, performing some of Sam's biggest ballads - and it was enough to give anyone chills.

Along with the music - which included renditions of Stay With Me, Too Good at Goodbyes and more - Sam Smith revealed he has a massive obsession with the girl band Fifth Harmony.

"When I hear them I feel free, I feel alive, I feel like the woman in me is on fire," he gushed about the group, before explaining he'd want them to play at his wedding.

Luckily for Sam, James had a surprise in store.

Fifth Harmony joined the pair in the car for an impromptu performance of their hit, Work From Home.

Watch how it all unfolded in the full Carpool Karaoke episode above.