As 'The Hunger Games: Mockingjay' Part 1 release date draws near, updates about the cast members are continuously surfacing. As per recent reports of Sugarscape, Jennifer Lawrence has her own "swear jar" on set to encourage her to control her incessant swearing.

However, one insider of The Sun believe that the idea wasn't working for 'The Hunger Games: Mockingjay' Part 1 heroine: "Jen has the filthiest mouth. It's great but she's so easy to wind up so some people set up a swear jar for her. It's running and running, but it's not stopped her."

The reports might have a basis for Michael Fassbender, who worked with Lawrence in 'X-Men: Days of Future Past', hinted about the blonde beauty's swearing: "Her performances are intelligent and logical through what seems to be a natural intuition... Oh, and she's got a filthy mouth!"

Nonetheless, it will not stop Nicholas Hoult's girlfriend from gaining fans. Willow Shields, who plays Lawrence's sister in 'The Hunger Games: Mockingjay' Part 1, praised her for being humble despite her fame: "She's so much fun on set. Everyone loves her and she's still the exact same person she was when we first started filming. She's handled her fame amazingly. She's the most fun, down-to-earth person -basically, she's the life of the party on set."

Meanwhile, Sam Claflin, who plays Finnick Odair, told MTV that shooting for 'The Hunger Games: Mockingjay' Part 1 became more serious.

"It's been very tough especially through the stuff we've been shooting recently where it was a little more serious. And I think it was the first time we'd all been kind of together because as you can imagine, if you're familiar with the third novel, we all kind of go our separate ways and then we're kind of brought together at a certain point, and it's the first time we'd all kind of seen each other for so long," he said.

'The Hunger Games: Mockingjay' Part 1 will hit theater screens on November 21.