Actor Willie Garson, best known for his roles as Stanford Blatch on HBO's Sex and the City and Mozzie on USA's White Collar, has died at the age of 57.

Garson was born William Garson Paszamant in Highland Park, N.J., where he studied theater at Wesleyan and received an MFA from Yale School of Drama. His early TV roles included such shows as Cheers, The X-Files, Friends, Twin Peaks, and Ally McBeal, although he was certainly most recognizable for his time as Carrie Bradshaw's (Sarah Jessica Parker) best friend on Sex and the City, a role which he later reprised in the show's two feature films, Sex and the City and Sex and the City 2. He had returned to the franchise for the upcoming HBO Max revival And Just Like That, which he was involved with at the time of his passing.

Garson also directed several episodes of television, including some for White Collar as well as the Boy Meets World spinoff Girl Meets World, on which he appeared as a guest star. His film roles included frequent collaborations with the Farrelly brothers in projects like KingPin and There's Something About Mary, and he also starred in movies like Groundhog Day and Being John Malkovich.