Born in 1956 in New York City, she is an American actress renowned for her versatile roles in film and television. She made a striking debut in the film "Sid and Nancy" (1986), portraying Nancy Spungen, which earned her critical acclaim. Her career includes notable performances in "The Belly of an Architect" (1987) and "Twins" (1988). She has also appeared in various TV series, including a memorable role in "Shameless." Her work is characterized by a strong ability to embody complex, often troubled characters.