NEW YORK — Jennifer Aniston and Gerard Butler hit the red carpet Tuesday night for the premiere of their new film, The Bounty Hunter.

While she didn't address romance rumors surrounding the co-stars, Aniston did admit that she and Butler "had a ball" filming the action-comedy, which opens in theaters this weekend.

"We had a great time together, we really did," said Aniston, 41, from the red carpet.

Butler, 40, echoed the fun times during filming, saying Aniston really stepped up when it came to shooting her action scenes.

"She was amazing," he said. "There's a lot of stuff that she hadn't done before, but for her it was nothing."

HOLLYWOOD, Calif. — Oscar winner Matt Damon and director Paul Greengrass re-team for their latest electrifying thriller in Green Zone. In the film, one soldier will go as far as it takes to uncover a conspiracy that extends throughout an unstable country erupting into war.

LOS ANGELES — Kristen Stewart says it was an easy decision to cut her locks to portray rocker Joan Jett in the upcoming feature film The Runaways.

"It was something I needed to do," the 19-year-old actress told MTV News at the film's premiere Thursday night in Hollywood. "I needed to feel the sweat coming down my face; I needed to be able to touch it."

Stewart says the hair chop was actually a bigger deal for her co-star in the film, Dakota Fanning, who "almost cried" at the transformation.

"I did; I almost cried," Fanning admitted. "For some weird reason, I had an attachment to Kristen's hair. But [her new look] was amazing, and it was what she wanted. It's not my hair!"

HOLLYWOOD, Calif. — The highly anticipated first trailer for Summit Entertainment's The Twilight Saga: Eclipse is being kept under tight wraps before it is released for the first time Thursday.

The Eclipse trailer will be shown in theaters before Remember Me, a film starring Robert Pattinson that debuts this weekend.