'X-Men: First Class' Actress Jennifer Lawrence Says Mystique Is 'A Good Girl... At First'

Filming for Matthew Vaughn's "X-Men: First Class" is well under way and since Jennifer Lawrence (a.k.a. Raven Darkholme) is the only actor we've had access to recently, we have to rely on her positive words about the production as our main source of information.

When MTV News caught up with the rising star at the Hollywood Awards Gala, she revealed that she received juicy insider info on her character, Mystique, straight from the original source: Rebecca Romijn.

"I got lots of juicy stories and gossip from the old set, that was much better [than advice]," Lawrence said. "I think the first thing I asked her was, 'What should I be for Halloween?' and she looked at me and started laughing. 'Right, I was supposed to ask you something else.'"

"There are no [makeup] tips," she said of the process of becoming the blue-skinned mutant. "You just have to grin and bare it."

Endless hours of makeup application aside, Lawrence said she's having a blast filming with her fellow mutants (James McAvoy as Charles Xavier, Michael Fassbender as Magneto, Rose Byrne as Moira MacTaggert, January Jones as Emma Frost, Nicholas Hoult as Beast, Caleb Landry Jones as Sean "Banshee" Cassidy).

"It’s so fun. We’re all in London and we went to Paris a few weekends ago, all of us, we’re having a blast filming it," she said.

With regard to her character, and Mystique's backstory, Lawrence said that her definitive arc is what struck her most about the role.

"My favorite thing that I saw in the script is that she has a very distinct beginning, middle and end," she said. "I love that in any story. She goes through something and comes out on the other side. It’s weird to say about a shape-shifter, but she really morphs."

But is Lawrence's Mystique all sugar and no spice?

"Yes," she insisted. "I play a good girl. At first."