Cate Blanchett starred in no fewer than 7 "Best Picture" nominated films:
Elizabeth (1998)
Cate Blanchett in Elizabeth
The Aviator (2004)
Cate Blanchett in The Aviator
Lord of the Rings: Fellowship of the Ring (2001)
Lord of the Rings: The Two Towers (2002)
Lord of the Rings: Return of the King (2003)
Babel (2006)
The Curious Case of Benjamin Button (2008)
Meryl Streep starred in 5 "Best Picture" nominated films:
Julia (1977)
Meryl Streep in Julia
The Deer Hunter (1978)
Meryl Streep in The Deer Hunter
Kramer vs. Kramer (1979)
Meryl Streep in Kramer vs. Kramer
Out of Africa (1985)
Meryl Streep in Out of Africa
The Hours (2002)
Meryl Streep in The Hours
Kate Winslet starred in 4 "Best Picture" nominated films:
Sense and Sensibility (1995)
Kate Winslet in Sense and Sensibility
Titanic (1997)
Kate Winslet in Titanic
Finding Neverland (2004)
Kate Winslet in Finding Neverland
The Reader (2008)
Kate Winslet in The Reader