Katherine Victoria Litwack (born June 13, 1986), known professionally as Kat Dennings, is an American actress. She is known for her starring roles as Max Black in the CBS sitcom 2 Broke Girls (2011–2017) and as Darcy Lewis in the Marvel Cinematic Universe superhero films Thor (2011), Thor: The Dark World (2013), Thor: Love and Thunder (2022), and the Disney+ miniseries WandaVision (2021).