Michelle Monaghan and Jake GyllenhaalGetty Images

While Michelle Monaghan showed up to the New York premiere of her new action thriller Source Code wearing a bright teal dress by Roksanda Ilincic, she confessed that her personal style is much different than her character in the movie, Christina Warren. “In the movie, unfortunately, I wore the same outfit over and over again so I didn’t really feel like there was much style,” Monaghan told us. “It was kind of boring but it was comfortable and that was the most important thing.” So did she slip anything away after filming wrapped? “Usually there is something I want to take home to remember the movie, but no, I just kind of left it all there.” If there’s one thing did take away about style, it’s from sexy co-star Jake Gyllenhaal: “He’s got a great head of hair,” she said. See more celebrities at the Source Code premiere in the gallery.

MORE: Michelle Monaghan’s 2011 Style

— Reporting by Kate Law