Susanna Song is Korean-American, born and raised in Los Angeles, California. Her journey began in the LA Fashion Industry after graduating from Pasadena City College with an Associate Degree in Fashion/Costume.

Song worked in the LA Fashion industry before changing her career path. Her new journey began in the Costume Department of the Falcon Theatre (now the Garry Marshall Theatre) in Toluca Lake, where she learnt the art of endurance, period costumes and the subtleties of storytelling through wardrobe. She then branched into the fast-paced world of Music Videos and Commercials prior to designing her first feature-film, OUR LITTLE SECRET. ​

After her third feature as a Costume Designer, Song was invited to join the wardrobe department of THE GOLDBERGS. Costume Designer Keri Smith then hired Susanna as her ACD on ABC's SCHOOLED season 1 & 2, as well as Jimmy Kimmel and Norman Lear's LIVE IN FRONT OF A LIVE STUDIO AUDIENCE with an all-star cast featuring Woody Harrelson, Marisa Tomei, Ellie Kemper, Will Ferrell, Jamie Foxx, Wanda Sykes, Kerry Washington, Ike Barinholtz, Anthony Anderson and Sean Hayes.

​In-between her TV commitments, Susanna did feature-film MINARI as Costume Designer, produced by Plan B and A24, starring Steven Yeun, Han Ye-ri, Youn Yuh-Jung and Will Patton. Minari premiered at Sundance 2020 and won both the Grand Jury Prize and Audience Award.