Lifestyle Style Billie Eilish Will Be the Youngest Met Gala Co-Chair — What Does the Coveted Role Mean? The 2021 Met Gala is coming up on Sept. 13 — here's what Billie Eilish and fellow co-chairs Timothée Chalamet, Naomi Osaka and Amanda Gorman will be doing By Hanna Flanagan Hanna Flanagan Style + Beauty Assistant, PEOPLE People Editorial Guidelines Published on September 9, 2021 04:27 PM Share Tweet Pin Email Billie Eilish. Photo: Jesse Grant/Getty Billie Eilish will make her Met Gala debut on Sept. 13, acting as a co-chair of the iconic benefit alongside fellow Gen Z trendsetters Timothée Chalamet, Naomi Osaka and Amanda Gorman. Ahead of event, we're breaking down how the 19-year-old singer was selected for the coveted role and what all it entails. When Vogue confirmed in May that Eilish would be the youngest Met Gala co-chair in history, the outlet explained that her "willingness to embrace an aesthetic as innovative as her music has pushed emerging brands into the limelight and challenged old rules about how a pop star should dress." Timothée Chalamet; Amanda Gorman; Naomi Osaka; Billie Eilish. Amy Sussman/Getty Images; Mike Coppola/Getty Images; Ilya S. Savenok/Getty Images; Jeff Kravitz/FilmMagic So, what exactly will she be doing? According to British Vogue, past co-chairs (which has included Lady Gaga, Harry Styles, Amal Clooney, Rihanna and Donatella Versace in recent years) have taken the stage during the famed Met Gala dinner. The outlet also revealed that co-chairs help with the guest list, food, decor and the "general feel of the evening." Andy Cohen Is Skipping the Met Gala After Attending with Sarah Jessica Parker: 'My Date Is Filming' The theme for the star-studded event (which comes after a canceled 2020 Met Gala and a postponed May date) is In America: A Lexicon of Fashion. Honorary chairs for the evening will be Tom Ford, Adam Mosseri and Vogue editor-in-chief Anna Wintour. Earlier this year, PEOPLE reported that the annual gala is enforcing a COVID-19 vaccination mandate and mask requirement. Kevin Mazur/WireImage "Currently, all attendees at The Met Gala on September 13 must provide proof of full vaccination and will also be expected to wear masks indoors except when eating or drinking," a spokesperson for The Met confirmed to PEOPLE in August. "We will update these guidelines as needed." Be sure to check out all of PEOPLE's Met Gala coverage to get the latest news on fashion's biggest night. The Metropolitan Museum of Art confirmed in April that the annual fashion fête will be back — in two parts. EXCLUSIVE: Keke Palmer and Ilana Glazer Will Host a Livestream of the 2021 Met Gala on Vogue Platforms The museum's new exhibition will include a series of events celebrating American fashion. Part one, titled In America: A Lexicon of Fashion, will debut on September 18, 2021 and run through September 5, 2022 to "celebrate The Costume Institute's 75th anniversary and explore a modern vocabulary of American fashion," the release states. Part two, In America: An Anthology of Fashion, will open on May 5, 2022 and "will explore the development of American fashion by presenting narratives that relate to the complex and layered histories of those spaces." It will also close on September 5, 2022. To celebrate part two, another gala, which will adhere to the First Monday in May timing, is set to take place on May 2, 2022.