But that was enough for E! News to get the inside scoop on her new film and a whole lot more at Sundance this week.
500 Days follows a lovestruck greeting card copywriter named Tom (Levitt) who falls for new coworker Summer (Deschanel), and according to the actress the romance was easy to pull off.
"I've known him for so long and feel really comfortable with him. We have a great rapport and he is such a talented actor. I love him," the 29-year-old said at the premiere party last Sunday as she was accompanied by real-life fiancé, Death Cab For Cutie rocker Ben Gibbard.
"I think both Tom and Summer are archetypes," the thesp said. "We've all been Tom and we've all been Summer."
The film is expected to arrive in July, but in the meantime Deschanel is looking forward to getting back to music with her band, She & Him, which is currently working on a follow up to their 2008 debut, Volume One.
Meanwhile on the documentary side, a film addressing Hayden Panettiere's pet cause, saving the dolphins, has been making waves this week at Sundance.
The Cove, from National Geographic photographer-turned-documentary filmmaker Louie Psihoyos and producer Fisher Stevens, follows the director and his team as they launch a guerilla mission to record and expose the slaughter of thousands of bottlenose dolphins in a hidden cove in a Japanese fishing village.
"I started out wanting to do the most beautiful underwater doc that was ever made, but instead we ended up on this sort of Stephen King horror film epic," director Psihoyos told E! News.
The documentary also explores the actions Psihoyos and her cohorts took which subsequently led to their arrest.
"Dolphins have become trained hacks for our amusements and at some point I became an activist," said the helmer. "One of my good friends back in Colorado was [author] Hunter Thompson and he said never be afraid to put yourself in the story. He made a career out of that. And we wanted to do something that was meaningful."