ICYMI, Gossip Girl was pretty much one of the most iconic shows of the last decade. Come on: The drama, the gorg cast, the ~fashun~, and the New York City backdrop made for amazing television. I could literally watch their crazy-AF lives unfold for hours (and I have) and *never* get bored. In fact, sad as its sounds, I think I was inspired to move to New York just because of my GG obsession. (We can unpack that later, lol.)
That said, if you haven't watched the show in a while (can't relate), then you actually might've forgotten that some now-suuuper famous celebs actually guessed starred on the show, either before they became well known or as cameos because, duh, they're kiiind of a big deal (*cough cough* Vera Wang). Picture this: Hilary Duff, Lady Gaga, Liz Hurley, Kristen Bell, and more *all* made appearances on the show at some point or another. Keep reading for 40 Gossip Girl guest stars you definitely forgot about.
Hilary Duff
![new york october 06 actors penn badgley and hilary duff is seen on location for gossip girl on the streets of manhattan on october 6, 2009 in new york city photo by jeffrey ufbergwireimage](https://hips.hearstapps.com/hmg-prod/images/gettyimages-91522862-1591835838.jpg?crop=1xw:0.6866666666666666xh;center,top&resize=980:* "On Location For "Gossip Girl" - October 6, 2009")
Hilary! Duff! The queen herself played fictional celeb Olivia Burke, who had a romantic fling with Dan. She even took part in one of the show's most iconic scenes: a steamy threesome between her, Dan, and Vanessa.
Armie Hammer
Remember Serena's brief love interest named Gabriel Edwards? The one who tried to get her to invest in his "philanthropy" project but was actually just trying to steal her money? Yeah, that was played by a young Armie Hammer. (Swoon.)
Lady Gaga
In season three, Gaga performed her song "Bad Romance" as part of a performance art piece in the episode. (Hi! Where was my invite?)
Tika Sumpter
Chuck once had a quick romance with Tika Sumpter, a.k.a. Raina Thorpe, the daughter of Russell Thorpe, who wanted to buy Bass Industries.
Elizabeth Hurley
Remember how Nate had a thing for powerful women? Liz was one of them, playing Diana Payne, the gossip-loving editor-in-chief of the New York Spectator.
Tyra Banks
Ahhh, we all remember the episode where Tyra (a.k.a. Ursula in the episode) had her best scene cut from the movie she was starring in in the show, and Serena had to help her keep it together during the premiere.
Karlie Kloss
![new york, ny november 19 model karlie kloss attends the gossip girl 100 episode celebration at cipriani wall street on november 19, 2011 in new york city photo by neilson barnardgetty images](https://hips.hearstapps.com/hmg-prod/images/gettyimages-133531163-1591836139.jpg?crop=1xw:0.6666666666666666xh;center,top&resize=980:* ""Gossip Girl" Celebrates 100 Episodes")
Yep! Karlie Kloss made a brief appearance as herself on the show, attending a fashion party and looking for Eleanor Waldorf.
Vera Wang
Even though Blair's first wedding was kind of a flop, she still got her gown fitted by Vera freakin' Wang.
Cyndi Lauper
She popped into the Waldorf house during a party, and Blair and Dorota totally geeked out. (I'd do the same.)
Krysten Ritter
![westwood, california october 07 krysten ritter attends the premiere of netflixs el camino a breaking bad movie at regency village theatre on october 07, 2019 in westwood, california photo by axellebauer griffingetty images](https://hips.hearstapps.com/hmg-prod/images/gettyimages-1179735783.jpg?crop=1xw:0.7171111111111111xh;center,top&resize=980:* "Premiere Of Netflix's "El Camino: A Breaking Bad Movie" - Arrivals")
In case you forgot, Krysten played a younger version of Lily's sister, Carol, in one of the show's throwback episodes.
Sofia Black D'Elia
Sofia played the young Sage Spence, upcoming It girl and the final girlfriend of Nate in season six.
Brittany Snow
Brittany played young Lily herself as part of the flashback cast, too.
Clemence Posey
A Harry Potter celeb in Gossip Girl? Here for it. Clemence played Chuck's Parisian girlfriend, Eva Coupeau, in season four.
Rachel Zoe
Rachel Zoe attends Blair's 20th birthday party as herself but ends up falling on the floor and getting chocolate fondue spilled all over her head (woof).
Kristen Bell
~Hi, Upper East Siders.~ Kristen Bell is *THE* voice of Gossip Girl. That said, she doesn't make a physical appearance on the show until the very last episode.
Ivanka Trump
![ivanka trump attends an evening honoring valentino lincoln center corporate fund black tie gala at alice tully hall in new york city �� lan photo by lars nikicorbis via getty images](https://hips.hearstapps.com/hmg-prod/images/gettyimages-526337354-1591824121.jpg?crop=1xw:0.6640625xh;center,top&resize=980:* "USA - "An Evening Honoring Valentino Lincoln Center Corporate Fund Black Tie Gala" - Arrivals In New York")
Ivanka made an appearance at a party on the show in 2010, and she appeared to be pretty close friends with Lily.
Jared Kushner
Aaand alongside Ivanka was her husband, Jared, who owned the New York Observer at the time, which the party was for on the show. Probs why the couple made their little cameo.
Rachel Bilson
Rachel made her debut in the final episode when she auditioned for the role of fictional Blair in the forthcoming movie based on Dan's best-selling book. Lol.
Tim Gunn
Ahhh, the days of Jenny Humphrey. Remember when she was an aspiring designer and had to showcase her work to Tim Gunn? Oh, the pressure!
Michelle Trachtenberg
Idk why but this woman was my late-2000s icon. Michelle played Georgina Sparks as a recurring character on the show who always seemed to cause drama.
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