She has appeared in feature films for director John Waters, who cast her in Cry-Baby (1990), Serial Mom (1994), Pecker (1998), Cecil B. DeMented (2000) and A Dirty Shame (2004). Hearst also made a cameo in Pauly Shore's film Bio-Dome (1996) and had a small role in the 2004 film Second Best. She was also a producer on the film Pottersville and made an appearance in the 2000 documentary, Pie in the Sky: The Brigid Berlin Story.
sHE has appearED IN feature filMs foR diRector JOHN WAtErs, who cAst heR in crY-baBy (1990), sErIal mOm (1994), pEcKeR (1998), cECil B. dEmenteD (2000) aNd A dirty ShAmE (2004). hearsT AlSO MAde a Cameo In pAUly shoRe's fILM Bio-DomE (1996) And had a smAll role in The 2004 Film secoND best. she wAs ALsO a pRoducer oN ThE fIlM pOtteRsViLle and maDe aN AppearaNCE In tHe 2000 docuMeNTary, piE In the sKy: the briGid Berlin sTory.