Joaquin Phoenix, who earned a Golden Globe nomination for his role in the film, plays a sentimental divorcee who makes a living writing personal letters for other people and falls in love with "Samantha" (Scarlett Johansson), a female voice that is part of an advanced operating system.
STORY: Joaquin Phoenix, Amy Adams and Olivia Wilde Salute Spike Jonze at 'Her' Premiere
Amy Adams plays Theodore’s filmmaker neighbor who files for divorce and also develops a relationship with her OS. "It was Spike [Jonze] that drew me to this role — Spike sat down and he had such a great point of view, I think anyone who talked with him was on board," Adams said of the Her writer and director. "He executed it beautifully."
Warner Bros. chief executive officer Kevin Tsujihara smiled alongside Her writer and director Spike Jonze.
Olivia Wilde plays a single woman also struggling with loneliness and insecurity. "[Spike and I] talked a lot about what insecurity makes you hear when people speak to you, and the difference between what people may have said and what you may hear," Wilde said.
Actress Greta Gerwig attended in support of Wilde, both of whom participated in THR’s Breakthrough Performers Panel.
Rooney Mara plays the ex-wife of Theodore (Phoenix), attending the L.A. premiere just after leaving the Dubai Film Festival earlier this week.
"I don’t think there’s a message behind this film; there isn’t anything specific that Spike wanted people to take out of it,” Mara told reporters. “It’s a personal experience watching it, and there’s lots of different things you can take out of it."
Kate Mara, who stars as Capitol Hill reporter Zoe Barnes in Netflix' House of Cards, attended the Her premiere with her sister.
House of Lies actress Dawn Olivieri also came out to the Directors Guild of America Theater for the premiere of Jonze's highly-anticipated film.
The Big Bang Theory actor Simon Helberg happily screened film about society's relationship with technology.
Johnny Knoxville, an oft-collaborator with Jonze on the Jackass franchise and Bad Grandpa, attended the premiere with wife Naomi Nelson. “I think the [relationship] is going to go a lot farther," he told THR of society's relationship with technology. "It’s going to get really ridiculous."
Red Hot Chili Peppers' bassist Flea rocked the red carpet before the Her screening in L.A.
The director celebrated the film's release with his stars on Thursday night.