Julianne NicholsonΒ (born July 1, 1971)Β is an American actress. She is best known for her roles in the filmsΒ August: Osage CountyΒ (2013) andΒ BlondeΒ (2022), as well as the television seriesΒ Law & Order: Criminal IntentΒ (2006β2009),Β Masters of Sex (2013β2014),Β EyewitnessΒ (2016), andΒ Mare of EasttownΒ (2021), the lattermost of which earned her aΒ Primetime Emmy Award. Nicholson's other notable credits includeΒ TullyΒ (2000),Β Ally McBealΒ (2001β2002),Β KinseyΒ (2004),Β ConvictionΒ (2006),Β Boardwalk EmpireΒ (2011β2013),Β Black MassΒ (2015),Β I, TonyaΒ (2017),Β TogoΒ (2019), andΒ The OutsiderΒ (2020).