Bronstein, a bit of a cult figure in the film world, made her directorial debut in 2008 at the SXSW festival with “Yeast,” which featured a pre-fame Greta Gerwig and was hailed by by New Yorker critic Richard Brody as a “mumblecore classic.”

"If I Had Legs I'd Kick You" premiered at Sundance 2025. The brutal film, starring Rose Byrne, features Conan O'Brien shifting into a dramatic role.

What will surely go down as one the most stressful movies of the year is “If I Had Legs I’d Kick You,” which premiered Friday at the Sundance Film Festival.

Mary Bronstein and star Rose Byrne talk about their film, “If I Had Legs I’d Kick You” and answer our very important questions about kids being terrible, bad parking jobs and therapy at the L.A. Times Studios @ Sundance Film Festival presented by Chase Sapphire Reserve.

Sundance: After Mary Bronstein's exhilarating, big-screen anxiety attack premiered, co-star Conan O'Brien said he's surprised the amazing Byrne wasn't hospitalized after filming.

Photos from the Sundance Film Festival 2025, the premieres of 'If I Had Legs I'd Kick You' & 'Ricky' Premieres On Day 2

The Premieres section is often where ticket buyers look for star power at the Sundance Film Festival, and the section included world premieres of new projects starring Rose Byrne, Dev Patel, and Benedict Cumberbatch, of varying quality about people with varying insanity. Let’s just jump into it.

From left, Conan O'Brien, Mary Bronstein and Rose Byrne attend the premiere of "If I Had Legs I'd Kick You" during the Sundance Film Festival on Friday at Library Theatre

Writer-director Mary Bronstein’s latest feature takes audiences on a tense journey of motherhood that almost never lets up. If I Had Legs I’d Kick You stars Rose Byrne as Linda, a mom attempting to find a treatment for her daughter’s mysterious illness while dealing with an absentee husband,

The 41st edition of the Sundance Film Festival returns to Park City and Salt Lake City in Utah, with world premiere documentaries and narrative films, presented in-person and streaming online.

Rose Byrne is incredible in Mary Bornstein's 'If I Had Legs I'd Kick You,' A24's anxiety-fueled thriller on a mother with no more f's to give