Sydney Bernice Sweeney (born September 12, 1997) is an American actress. She appeared in the Netflix series Everything Sucks! (2018) and has taken on recurring roles in the Hulu series The Handmaid's Tale (2018) and the HBO miniseries Sharp Objects (2018). Since 2019, she has starred as Cassie Howard in the HBO teen drama series Euphoria. In film, she had a role in Quentin Tarantino's 2019 comedy-drama Once Upon a Time in Hollywood, portraying Snake, a member of the Manson Family.