Jennifer Lopez joined James Corden on "The Late Late Show's" hit "Carpool Karaoke" segment and it might be the best one we've seen!

JLo was the perfect guest on the show's first primetime special on Tuesday night's episode, which marked the show's one-year anniversary on air.

The sketch had many great moments, including Lopez belting out her biggest hits, and yes, that includes "Jenny from the Block," but the highlight of the segment was when Corden prank-texted Leonardo DiCaprio from the singer's phone.

After absolutely nailing the sing-along of hits like "Love Don't Cost a Thing" and "Booty," JLo, 46, was asked by Corden, 37, about the most famous person she had on her phone as he started going her contacts.

"Oh my God - hang on, I've got to pull in," he said as he parked the car into a parking lot and started browsing through her phone. "This is the best phone I've ever seen in my life. This is insane!" added Corden about Lopez's list of contacts, which included the likes of Bradley Cooper, Cristiano Ronaldo, Iggy Azalea, Dwayne Johnson, Fergie and Demi Lovato.

Things got interesting when Corden, barely able to contain his excitement, chose to send a prank-text to Leo. "Hey Leo-" he started typing the message before Jenny interrupted him, saying that she would never call him "Leo."

Taking her advice, Corden changed the word to something more believable and came up with the following text: "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."

"I'm not going to let you send that!" the "Shades of Blue" star exclaimed before Corden pressed send.

"I'm gonna have to explain that," Jlo said before the two rocked out to her 2011 hit "On The Floor" when suddenly her phone buzzed with a notification. "The Revenant" actor had replied to the text and it was the best response ever!

"You mean tonight BooBoo, club-wise?" DiCaprio wrote as JLo showed the text to the camera. "Here's the funny part, he actually thinks I'm serious!" she quipped

Watch the hilarious video below: