In the flick, which hits theaters on April 21, Katherine plays a woman who sets out to make life hell for her ex-husband’s (Stults) new wife (Rosario Dawson).
“That character was something she obviously worked really hard on, she had to wear it,” Geoff, 39, told ABC. “It’s a lot of preparation, her posture, the way she carried herself. I didn’t like being around her until the end of the day when she came out of it. Really, its uncomfortable, it’s scary. She does a wonderful job.”
Also in attendance a the premiere to show their support was Ben Barnes, Joey King and her sister Hunter, Corinne Olympios, Kara Del Toro, Beverley Mitchell and her hubby Michael Cameron, Mary Lynn Rajskub, Molly Quinn, Garcelle Beauvais, Lauren Ash and Zoe Bell.