Lawrence, who became a household name playing Katniss, previously said she'd be "totally" up for coming back as the character.
And last month Josh Hutcherson told US magazine Variety he'd "be there in a heartbeat" if he was asked to come back.
"It would not take any convincing at all," he said.
Hunger Games fans were ecstatic at news the beloved characters would be making a new appearance.
One wrote: "For non-Hunger Games fans this is like Rihanna returning to music."
Another added: "It's basically Jesus returning to Earth."
But there were some who weren't happy to see the information revealed, saying it could have been kept an "emotional" surprise.

