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For the exclusive museum fundraiser, Keoghan wore a vintage-style brown velvet tuxedo from Burberry, complete with a top hat, but afterward, he kept his look more casual

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The fabric in this Alyce Paris Homecoming style is Rhinestone Taffeta Explore Alyce Paris homecoming and short dresses at Signatures Formal

Casual Day Out Add layered necklaces and a crossbody bag

However, it's been reported that the menswear in the film (think: sharp tuxes, pocket squares, jumpers resting over the shoulders and perfectly tailored shirts) was actually put together by their designer, Ralph Lauren, something many have furiously denied