It's a film with a catchy name and a buzzy cast.

"If I Had Legs I'd Kick You" stars Rose Byrne as a wife and mom who's dealing with her daughter's mystery illness, an absentee husband and what looks to be a contentious relationship with her therapist, played by Conan O'Brien.

"I'm thrilled with the movie. I love it," Rose Byrne told On The Red Carpet at the Sundance Film Festival, where "If I Had Legs I'd Kill You" made its debut.

Byrne touted the performance of her co-star O'Brien.

"We had a lot of fun. He was very respectful and very serious...very serious, but still funny," she explained.

The film also stars Danielle Macdonald, Christian Slater and A$AP Rocky. It's written and directed by Mary Bronstein.

It's been making the festival rounds, with Rose Byrne winning the Silver Bear

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