Ben Affleck Says Rosamund Pike Killed It In 'Gone Girl'!

Ben Affleck suits up while making an appearance on The Tonight Show Starring Jimmy Fallon to promote his highly anticipated film Gone Girl on Monday (September 29) in New York City.

The 42-year-old actor’s co-stars Rosamund Pike and Neil Patrick Harris also hit Late Night with Seth Meyers and Late Show with David Letterman to promote the film, which hits theaters on Friday (October 3).

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“It’s the role of a lifetime for a woman. I mean, these [roles] don’t come along every day, particularly for women, which is like, usually you’re just the chick,” Ben recently gushed to People about Rosamund. “I just watched her. She knew what it was. She worked her ass off every day. She was really committed to it. And she killed it.”

FYI: Rosamund is wearing a rag & bone dress and Jennifer Fisher ring.

20+ pictures inside of Ben Affleck and Rosamund Pike at late night shows…