Fashion week has officially arrived once again. 

Just a few months after we bid farewell to spring fashion week in September, the next season of the biannual tradition is already upon us. Of course, with all the runways and supermodels that strut them come the famous faces who jet around the world to watch. 

With haute couture designs already being unveiled on the catwalks, celebrities have been popping up on their way to the ultra stylish and exclusive shows and parties. Thanks to the shutterflies stationed at every A-list event, fans get to see not only what's out on the runway, but who showed up to see...and what they're wearing, of course. And, as evidenced by Jennifer Lopez's surprise appearance in Versace's show last season, there really is no telling who may pop up to watch—or strut. 

Since fashion week wouldn't be complete without the star sightings, we've got you covered on every single one. 

As fashion weeks unfold in New York, London, Milan and Paris, E! News will keep you up to date on all the celebrities out and about with this handy gallery. 

Keep scrolling to see the stars who have already made their way to fashion week and continue to check back through February for all the sightings—and fabulous fashion—to come. 

Paris Fashion Week, Star Celeb Sightings, Lily Collins, Kit Harington, Hailey Bieber

Pascal Le Segretain/Getty Images

Paris Fashion Week Star Celeb Sightings, Zoe Kravitz, Lenny Kravitz

Pascal Le Segretain/Getty Images

Paris Fashion Week Star Celeb Sightings, Charlotte Gainsbourg, Rami Malek, Ana de Armas

Pascal Le Segretain/Getty Images

Paris Fashion Week Star Celeb Sightings, Joe Keery, Maika Monroe

Dominique Charriau/WireImage

Paris Fashion Week Star Celeb Sightings, Brooklyn Beckham, Nicola Peltz

Dominique Charriau/WireImage

Cara Delevingne, Karlie Kloss

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Paris Fashion Week Star Celeb Sightings, Liza Koshy

Anthony Ghnassia/Getty Images for Dior

Paris Fashion Week Star Celeb Sightings, Rachel Brosnahan, Demi Moore

Stephane Cardinale/Corbis via Getty Images

Paris Fashion Week Star Celeb Sightings, Olivia Palermo

Dominique Charriau/WireImage

Paris Fashion Week Star Celeb Sightings, Cara Delevingne, Maya Hawke

Dave Benett/Getty Images

Paris Fashion Week Star Celeb Sightings, Alexa Chung

Dave Benett/Getty Images

Milan Fashion Week Sightings, Amber Valletta, Cara Delevingne, Ashley Benson, Madelaine Petsch

Stefania D'Alessandro/Getty Images

Milan Fashion Week Sightings, Cara Delevingne, Ashley Benson

Jacopo Raule/WireImage

Milan Fashion Week Sightings, Orlando Bloom

Jacopo Raule/WireImage

Irina Shayk, Celebrities at Fashion Week

Gareth Cattermole/BFC/Getty Images for BFC

Hunter Schafer, Celebrities at Fashion Week

David M. Benett/Dave Benett/Getty Images for Burberry

H.E.R., Celebrities at Fashion Week

Jeff Spicer/BFC/Getty Images for BFC

Hana Cross, Celebrities at Fashion Week

David M. Benett/Dave Benett/Getty Images

Charli XCX, Celebrities at Fashion Week

Santiago Felipe/Getty Images

Cate Blanchett, Celebrities at Fashion Week

David M. Benett/Dave Benett/Getty Images

Alan Cumming, Celebrities at Fashion Week

Jeff Spicer/BFC/Getty Images for BFC

Meghan Trainor, WTF Widget, London Fashion Week, Celebrities at Fashion Week

Jeff Spicer/Getty Images for BFC

Reuben Selby, Maisie Williams, Celebrities at Fashion Week

Santiago Felipe/Getty Images

Romeo Beckham, Cruz Beckham, David Beckham, Harper Beckham and Anna Wintour, London Fashion Week, Celebrities at Fashion Week

Darren Gerrish/WireImage

London Fashion Week, Victoria Beckham, Celebrities at Fashion Week

Gareth Cattermole/BFC/Getty Images for BFC

Maya Henry, WTF widget, Celebrities at Fashion Week

David M. Benett/Dave Benett/Getty Images

Victoria Justice, WTF widget, Celebrities at Fashion Week

Anna Webber/Getty Images for alice + olivia

Best Looks at Fashion Week, Fashion Week Widget, Marc Jacobs, Miley Cyrus

Slaven Vlasic/Getty Images for Marc Jacobs

Nicki Minaj, Kenneth Petty, 2020 Fashion Week, Marc Jacobs

Gotham/GC Images

Yolanda Hadid, 2020 Fashion Week, Marc Jacobs

Dimitrios Kambouris/Getty Images for Marc Jacobs

Best Looks at Fashion Week, Fashion Week Widget, Marc Jacobs, Karlie Kloss

Slaven Vlasic/Getty Images for Marc Jacobs

André Leon Talley, 2020 Fashion Week, Marc Jacobs

Dimitrios Kambouris/Getty Images for Marc Jacobs

Naomi Campbell, 2020 Fashion Week, Marc Jacobs

Dimitrios Kambouris/Getty Images for Marc Jacobs

Aaron Philip, 2020 Fashion Week, Marc Jacobs

Jamie McCarthy/Getty Images for Marc Jacobs

Sofia Coppola, 2020 Fashion Week, Marc Jacobs

Dimitrios Kambouris/Getty Images for Marc Jacobs

Celebs at Michael Kors show, NYFW, Ashley Benson

Cindy Ord/WireImage

Celebs at Michael Kors show, NYFW,  Issa Rae

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Julia Louis-Dreyfus

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Natti Natasha

Cindy Ord/WireImage

Celebs at Michael Kors show, NYFW, Camila Coelho

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Hannah Bronfman

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Blake Lively

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Justine Skye

Cindy Ord/WireImage

Celebs at Michael Kors show, NYFW, Kelsea Ballerini

Cindy Ord/WireImage

Celebs at Michael Kors show, NYFW, Olivia Holt

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Dove Cameron

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Michael Kors show, NYFW, Cameron Dallas

Jamie McCarthy/Getty Images for Michael Kors

Celebs at Fashion Week, 2020 New York Fashion Week, NYFW, Katie Holmes

Cindy Ord/Getty Images for NYFW: The Shows

Photos

See More From See Every Celebrity at Fashion Week: Fall 2020

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