New York City is a home and a hub for celebrities across all industries, and the glitzy appeal of Gossip Girl’s NYC is made all the more glamorous by its numerous celebrity cameos. Given that Blair and Serena run in the upper echelon of the city’s It girls, it actually makes total sense for them to be rubbing shoulders with Alexa Chung and Lady Gaga. You never know who you’re going to run into on the Upper East Side — and in Gossip Girl’s case, you may not even remember half the celebs you meet.
Over the course of six wonderfully melodramatic seasons, Gossip Girl racked up quite a stacked cast list on IMDB. From stars with recurring roles to those who pop in to play themselves for one scene, here are 17 celebrities who appeared on Gossip Girl that you probably forgot about.
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1. William Baldwin
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Serena van der Woodsen’s got some serious daddy issues. One of Gossip Girl’s longest subplots is Serena’s search for her father, who essentially walked out on her when she was a kid. He finally appears for the first time in Season 3 Episode 19 (“Dr. Estrangeloved), where he’s played by a member of one of NYC’s royal families, William Baldwin. (In case you’re wondering, he’s Hailey Bieber’s uncle.)
2. Lady Gaga
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You probably blocked out the time Blair and Dan put on a jukebox version of Snow White at NYU given that the whole ordeal was painfully cringe. That means you probably also blocked out the fact that real-life NYU alum Lady Gaga gives a dead-eyed performance of “Bad Romance” at the end of the episode (Season 3 Episode 10, “The Last Days of Discostick”).
3. Hilary Duff
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Also included in the Season 3 NYU timeline is Hilary Duff as Olivia Burke. Olivia’s a famous actress who balances attending NYU, starring in the vampire romance franchise Endless Knights, and dating Dan. She’s basically the Gossip Girl universe’s hybrid of Kristen Stewart and Emma Watson.
4. Sebastian Stan
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Okay, there’s absolutely no way you forgot this one. Before Sebastian Stan was the MCU’s BB, he was Gossip Girl’s lesser-known CB — Carter Baizen. Stan played St. Jude’s sleaziest graduate and one of Serena’s most questionable exes from Seasons 1 through 3.
5. Karlie Kloss
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Karlie Kloss will always attend a NYFW party — even if that party only exists within Gossip Girl’s Season 4 premiere (“Belles du Jour”).
6. Armie Hammer
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Serena’s dating history includes one man whose bite may be worse than his bark. In Season 2, she starts dating a con man named Gabriel Edwards, played by Armie Hammer.
7. Cyndi Lauper
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Girls just wanna have Cyndi Lauper do a surprise performance at their eighteenth birthday party — at least, Blair Waldorf does. Lauper makes a cameo in Season 2 Episode 10 (“Bonfire of the Vanity”).
8. Tyra Banks
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Tyra Banks plays Ursula, a famous actress who Serena keeps from crashing out at a movie premiere, in Season 3 Episode 4 (“Dan de Fleurette”).
9. Clémence Poésy
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When Chuck goes to France in Season 4 and attempts to restart his life as Henry Prince, he takes Fleur Delacour — err, I mean, Clémence Poésy — along for the ride.
10. Mädchen Amick
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Sorry, Archiekins — Alice Cooper’s got her eye on a different Archibald. Riverdale star Mädchen Amick appears in Season 2 as Nate’s first foray into MILF territory.
11. Elizabeth Hurley
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Mädchen Amick walked so Elizabeth Hurley could run … Nate’s life into the ground. Hurley plays shady media mogul Diana Payne throughout Season 5.
12. Aaron Tveit
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This guest star lives rent-free in Broadway fans’ minds. Aaron Tveit, the patron saint of tenors, appears in Seasons 2 through 5 as Nate’s cousin, politician Tripp van der Bilt.
13. Alexa Chung
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In Season 6 Episode 3 (“Dirty Rotten Scandals”), Alexa Chung, the minimalist darling of the 2010s fashion blogging scene, refuses to walk the runway at Blair Waldorf’s debut fashion show.
14. Rachel Bilson & Kristen Bell
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Rachel Bilson and Kristen Bell show up in the series finale as two actresses auditioning for a role in Inside Out, the movie adaptation of Dan’s bestselling book, Inside. Bell’s voice should ring a bell — she’s the voice ofGossip Girl.
15. Tim Gunn
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Project Runway’s iconic mentor, Tim Gunn gives Jenny a little mentorship in Season 4 Episode 6 (“Easy J”).
16. Rachel Zoe
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Rachel Zoe: celebrity stylist, fashion designer, and extremely good sport. In her GG cameo in Season 4 Episode 7 (“War at the Roses”), Zoe takes a tumble and spills chocolate sauce all over her head before delivering her iconic catchphrase, “I die.” We die, too.
17. Florence Welch
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Welch’s performance of “Cosmic Love” in Season 4 Episode 14 (“Panic Roommate”) was reportedly due to her real-life friendship with Blake Lively. The actress suggested to the producers that they should use Florence’s music in the show. The producers went one step further, and we’re all the better for it.
Wonder what other celebs have appeared in your favorite TV shows? Check out these 24 Sex and the City cameos and 11 Gilmore Girls cameos you may have missed!