The stars of The Hunger Games: Mockingjay had a case of dance fever Saturday at their big bash at the 67th Annual Cannes Film Festival.
Then Jennifer Lawrence joined him for a brief wiggle to Robyn.
After that, the Oscar winner really got into some booty shaking when she and Josh Hutcherson danced together to Missy Elliott's hip-hop anthem, "Work It."
The party was held at a villa reportedly on the market for 150 million euro ($205 million)!
The trio huddled under a tented garden with their co-star Sam Claflin and director Francis Lawrence.
J.Law looked effortlessly fabulous in a sheer black dress and green jeweled earrings, before changing into a black jumpsuit with a gold belt.
Her cropped locks were light and loose.
Most guests took a 30-minute shuttle ride to the villa. The stone entryway was lit up with red lights and the franchise's signature Mockingjay symbol hung above the doorway.
Inside models dressed in goth-like black leather, feathers and more lined a black carpet.
Guests continued to drink and dance, barely noticing when the cast slipped away to destinations unknown.