J.Lo is the latest A-lister to join James Corden for Carpool Karaoke and the result is a strong contender for the funniest one yet.

There are nearly too many hilarious highlights to mention but Corden texting Leonardo Dicaprio from J.Lo’s phone is certainly up there.

After some debating, James composed a message which read: "Hey baby, I'm kind of feeling like I need to cut loose. Any suggestions? Let me know. J.Lo, you know, from the block."

While Jennifer laughed that she wasn't going to let James send the message, he had already done so. The pair then sang along to one of Jennifer's hit songs, ‘On The Floor’, by the end of which Leonardo had responded.

"He wrote back!" Jennifer laughs, to which James replys, "No way. No, he did not!"
Leonardo's brilliant response: "You mean tonight, boo boo? Club-wise?"

Watch the video below, you won’t regret it.