Pregnant Jennifer Lawrence shimmers and Jonah Hill flashes his chest tattoo at the 'Don't Look Up' world premiere. Here are the best photos from the red carpet.

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Jennifer Lawrence plays Dr. Kate Dibiasky, an astronomer who has discovered a comet is en route to destroy Earth.

Leonardo DiCaprio plays another astronomer, Dr. Randall Mindy, who also discovered the dangerous comet.

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Together, the two set out on a media tour to warn the world that the comet is on its way.

Meryl Streep plays Janie Orlean, fictional president of the United States.

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Jonah Hill plays Jason Orlean, the son of President Orlean who is also her chief of staff.

Kid Cudi plays a DJ in the movie, he also performs the movie's original song with Ariana Grande, who also stars.

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Tyler Perry plays Jeck Bremmer, the host of a popular morning show that the astronomers go on.

Ron Pearlman plays Colonel Ben Drask, whose job it is to knock the comet off its course.

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Adam McKay is the writer-director of the movie. He's also known for movies like "The Big Short" and "Step Brothers."

Other stars who attended the premiere were Florence Pugh...

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"Succession" star Jeremy Strong...

And the science guy himself, Bill Nye.

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