Lindsay Lohan and Samantha Ronson caused a splash at Cannes by making out at a party.

The actress and the DJ, who have been inseparable lately, spent Thursday evening being affectionate at a party thrown by Diddy on his yacht.

The pair turned heads as they spent the evening together, holding hands and kissing.

The 21-year-old actress, looking to relaunch her career after a disastrous 2007, claims she and Ronson are just friends but they frequently travel and party together. The 'Mean Girls' star often joins Ronson for her DJ sets.

Lohan's mother, Dina, recently called Ronson "a sweetheart" in an interview with People.

"She's great — and she's the best spinner around," Dina claimed, adding that she's friends with Ronson's mother, Ann Dexter-Jones, a writer.

"I'm friends with her mom. She's raised some extremely talented kids. It's a talented family."