Trish Summerville is an American costume designer. She is best known for her work on Francis Lawrence's dystopian science fiction film The Hunger Games: Catching Fire (2013), as well as her collaborations with David Fincher, including his psychological thriller films The Girl with the Dragon Tattoo (2011), Gone Girl (2014), and his black-and-white biographical drama film Mank (2020), for which she was nominated for both an Academy Award for Best Costume Design and a BAFTA Award for Best Costume Design. Summerville was also nominated for a Primetime Emmy Award in the category Outstanding Period Costumes for her work on the television program Westworld.

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