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Cassidy Mosher

  • Costume and Wardrobe Department
  • Costume Designer
  • Producer
IMDbProStarmeterSee rank
Cassidy Mosher
Cassidy Mosher is a Costume Designer and Artist living in New York City, with deep roots in the Midwest. Upon graduating with a degree in Fashion Design from the renowned Fashion Institute of Technology, where she specialized in tailoring, knitwear, and textile science, she embarked upon a career in film.

Cassidy has an extensive background not only in Costume Design but also in Wardrobe Supervising and Set Costuming, which is are important pieces behind the scenes to the overall costume vision being realized on screen.

Now foraying into her first directorial role, along with creative producing, Cassidy is very excited to use her extensive knowledge of on-set work in a leadership capacity.
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    • Agent info
    • Resume
IMDbProStarmeterSee rank
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    • Awards
      • 1 nomination total

    Photos7

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    Known for

    Penn Badgley, Blake Lively, Taylor Momsen, Leighton Meester, Jessica Szohr, Chace Crawford, and Ed Westwick in Gossip Girl (2007)
    Gossip Girl
    7.5
    TV Series
    • Costume and Wardrobe Department
    Chloë Levine and Kimie Muroya in Antarctica (2020)
    Antarctica
    5.2
    • Costume Designer
    • 2020
    Rebecca Hall and Dan Stevens in Permission (2017)
    Permission
    5.4
    • Costume Designer(as Cassidy M. Mosher)
    • 2017
    Bishop Blay in Out of My Hand (2015)
    Out of My Hand
    6.2
    • Costume Designer
    • 2015

    Credits

    IMDbPro

    Costume and Wardrobe Department



    • The Savant
      • background costumer
      • additional principal costumer
      • Completed
      • TV Series



    • Crutch (2025)
      Crutch
      5.0
      TV Series
      • background costumer
      • 2025
    • Vincent D'Onofrio, Liev Schreiber, Regina King, Yuri Kolokolnikov, Tonic, JC Argüelles, Matt Smith, Zoë Kravitz, Austin Butler, Nikita Kukushkin, and Bad Bunny in Caught Stealing (2025)
      Caught Stealing
      6.8
      • additional set costumer
      • 2025
    • Christine Baranski, Audra McDonald, Donna Murphy, Cynthia Nixon, Louisa Jacobson, Morgan Spector, Carrie Coon, and Denée Benton in The Gilded Age (2022)
      The Gilded Age
      8.1
      TV Series
      • background costumer
      • 2025
    • Christopher Meloni in Law & Order: Organized Crime (2021)
      Law & Order: Organized Crime
      7.7
      TV Series
      • additional wardrobe supervisor
      • stunt costumer
      • principal costumer
      • 2024–2025
    • Jon Hamm in Your Friends & Neighbors (2025)
      Your Friends & Neighbors
      7.6
      TV Series
      • additional principal costumer
      • 2025
    • Power Book III: Raising Kanan (2021)
      Power Book III: Raising Kanan
      7.7
      TV Series
      • principal costumer
      • tandem wardrobe supervisor
      • background costumer
      • 2021–2025
    • Queen Latifah in The Equalizer (2021)
      The Equalizer
      5.6
      TV Series
      • additional principal costumer
      • additional wardrobe supervisor
      • principal set costumer
      • 2022–2025
    • Adam Scott in Severance (2022)
      Severance
      8.6
      TV Series
      • wardrobe supervisor: re-shoots
      • costumer-reshoots
      • 2022–2025
    • Aasif Mandvi, Katja Herbers, and Mike Colter in Evil (2019)
      Evil
      7.7
      TV Series
      • principal costumer
      • costumer
      • background costumer ...
      • 2019–2024
    • Walton Goggins, Lana 5, Aaron Moten, and Ella Purnell in Fallout (2024)
      Fallout
      8.3
      TV Series
      • stunt costumer
      • 2024
    • Rudy Mancuso and Camila Mendes in Música (2024)
      Música
      6.4
      • set costumer
      • 2024
    • Andrew Barth Feldman and Jennifer Lawrence in No Hard Feelings (2023)
      No Hard Feelings
      6.3
      • costumer
      • 2023
    • Caitlin Stasey in Smile (2022)
      Smile
      6.5
      • assistant costume designer
      • 2022
    • Michael Che in That Damn Michael Che (2021)
      That Damn Michael Che
      7.4
      TV Series
      • set costumer
      • 2022
    • Alessandro Nivola in The Many Saints of Newark (2021)
      The Many Saints of Newark
      6.2
      • costumer (uncredited)
      • 2021

    Costume Designer



    • One Reckless Weekend
      • Costume Designer
      • Pre-production



    • Chloë Levine and Kimie Muroya in Antarctica (2020)
      Antarctica
      5.2
      • Costume Designer
      • 2020
    • Rebecca Hall and Dan Stevens in Permission (2017)
      Permission
      5.4
      • Costume Designer (as Cassidy M. Mosher)
      • 2017
    • Kassidy Keirstead and Sophia Sage Speringo in No Costume No Candy (2017)
      No Costume No Candy
      9.2
      Short
      • Costume Designer
      • 2017
    • Mateusz Damiecki, Vitaliy Khaev, Sergey Chirkov, and Svetlana Ivanova in Kak ya stal russkim (2015)
      Kak ya stal russkim
      7.2
      TV Series
      • Costume Designer: New York City
      • 2015
    • Bishop Blay in Out of My Hand (2015)
      Out of My Hand
      6.2
      • Costume Designer
      • 2015
    • How to Get Rich in 13 Easy Steps (2014)
      How to Get Rich in 13 Easy Steps
      8.6
      Short
      • Costume Designer
      • 2014
    • Goldenstate (2012)
      Goldenstate
      Short
      • Costume Designer
      • 2012
    • Landing
      Short
      • Costume Designer
      • 2010
    • Vanishing Point
      Short
      • Costume Designer
      • 2010

    Producer



    • One Reckless Weekend
      • creative producer
      • Pre-production



    • Kassidy Keirstead and Sophia Sage Speringo in No Costume No Candy (2017)
      No Costume No Candy
      9.2
      Short
      • associate producer
      • 2017

    Personal details

    • Alternative name
      • Cassidy M. Mosher

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