Chris Pratt Sings 'Margaritaville,' Bryce Dallas Howard Plays 'Jessica or Bryce?' at 'Jurassic World' Premiere

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The Jurassic World cast shut down Hollywood with its massive premiere on Tuesday night and ET's Ashlan Cousteau was there for all the madness.

Everyone wanted a piece of the movie's star, Chris Pratt, who walked the carpet with his wife Anna Faris, and Ashlan got them both to give us their best I-just-saw-a-scary-dinosaur face. While Anna's face went the traditional terrified route, Chris put on a more sultry stare.

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"I only have one look in this whole movie," Chris explained. "That's the look."

"Mine was way better," Anna insisted.

Chris' singing proved to be better at the premiere's after-party, where he sang backup for none other than Jimmy Buffett.

While Chris was putting on faces and belting out "Margaritaville," co-star Bryce Dallas Howard was sorting out her mistaken identity. Many people online confused Bryce for her friend Jessica Chastain in the Jurassic World trailers, so when Ashlan met up with Bryce at the premiere, they played a game in which the actress was shown a picture of an isolated facial feature and she had to guess if it was her or Jessica.

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Watch the video to see what happened when we threw Bryce a curveball in the "Jessica or Bryce?" quiz.

Jurassic World, which also stars Judy Greer and Jake Johnson, takes place 22 years after the events of Jurassic Park. Isla Nublar now features a fully functioning dinosaur theme park called Jurassic World, as originally envisioned by the late John Hammond.

The film hits theaters June 12.