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They're not hiding any more!
After going public with their unexpected romance — she's a reality TV star and makeup mogul from one of the most public families in Hollywood while he's an Academy Award-nominated actor who cherishes his privacy — at Beyonce's "Renaissance World Tour" concert in Los Angeles on Sept. 4, Kylie Jenner and Timothee Chalamet haven't stopped.
Days after engaging in PDA at Bey's show, the "Dune" actor, 27, set the room "abuzz," Vogue reported, when he brought the single mom of two, 26, as his date to a New York Fashion Week event — the launch of Haider Ackermann's beauty collaboration with Augustinus Bader — on Sept. 8.
Then came an even more public outing: The couple stayed close while watching the men's final match at the US Open on Sept. 10.
Kylie Jenner and Timothee Chalamet put their arms around each other as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
Keep reading for the best photos from their adorable tennis outing…
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Kylie Jenner and Timothee Chalamet smooched in the stands while watching the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
Kylie was first linked to the "Dune" star in the spring of 2023 when the Instagram account Deuxmoi posted that they'd been seeing each other, possibly since January when they allegedly spent time together during Paris Fashion Week.
Back in Los Angeles in April, what looked in photos like a taco date followed. At that point, according to an "Entertainment Tonight" source, Kylie and Timothee's relationship was casual. "It's been really fun for her because it feels a lot different than her past relationships," the source said. "It's new and exciting for Kylie, and she's having a lot of fun."
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Kylie Jenner and Timothee Chalamet shared a sweet moment as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
MORE: Celebrity PDA of 2023
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Kylie Jenner played with boyfriend Timothee Chalamet's hair as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
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Kylie Jenner and Timothee Chalamet had a laugh as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
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Kylie Jenner lovingly put an arm around boyfriend Timothee Chalamet as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
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Kylie Jenner and Timothee Chalamet puckered up in the stands while watching the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.
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Kylie Jenner and Timothee Chalamet shared a sweet moment as they watched the action during the men's singles final match between Novak Djokovic of Serbia and Daniil Medvedev of Russia on day 14 of the US Open at the USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City on Sept. 10, 2023.