Kate graduated from high school a year early. She was accepted at the prestigious NYU Tisch School of the Arts but deferred for 3 consecutive years due to acting and singing.She is the great-granddaughter of the founder of the New York Giants, Timothy Mara and Art Rooney, founder of the Pittsburgh Steelers. She often sings the national anthem at Giants home games.

1. Ironclad (Sângele templierilor) (2011) - Isabel

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2. Happythankyoumoreplease (2010) - Mississippi

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3. Iron Man 2 (2010) - U.S. Marshal

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4. 127 Hours (127 de ore) (2010) - Kristi

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5. Peep World (2010) - Meg

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6. Transsiberian (2008) - Abby

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7. Shooter (2007) - Sarah Fenn

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8. "The Late Late Show with Craig Ferguson" (2005) - Herself (2 episodes, 2008-2010) 9. Brokeback Mountain (2005) - Alma Jr., Age 19 10. Urban Legends: Bloody Mary (2005) - Samantha Owens 11. "Entourage" (2004) - Brittany (4 episodes, 2009) 12. "Nip/Tuck" (2003) - Vanessa Bartholomew (4 episodes, 2003) 13. Tadpole (2002) - Miranda Spear 14. "24" (2001) - Shari Rothenberg (5 episodes, 2006)

1. Has older brother, Dan.

2. Grew up in Bedford, New York.

3. Granddaughter of Wellington Mara and Tim Rooney.

4. Ranked #43 on the Maxim magazine Hot 100 of 2007 list.

5. A skilled jazz/tap/ballet dancer.

6. Her younger sister Rooney Mara is also an actress.

7. New York Giants fan.

8. Great-granddaughter of Art Rooney and Tim Mara.

9. Uncle John Mara is CEO of the New York Giants since 2005.

10. Great-grandfather Tim Mara founded the New York Giants. Great-grandfather Art Rooney founded the Pittsburgh Steelers.

11. Daughter of Timothy Christopher Mara, a scout for the New York Giants and Kathleen McNulty, née Rooney.

12. Was in consideration for the role of Selina Kyle/Catwoman in The Dark Knight Rises (2012), but Anne Hathaway was cast instead.

13. Kate and her sister Rooney Mara both appeared in Best Picture Oscar nominees in 2011. Ronney was in The Social Network (2010), Kate in 127 Hours (2010).

14. Her favorite films are Coal Miner's Daughter (1980), The Sound of Music (1965), Lady Jane (1986), The English Patient (1996) and Friday Night Lights (2004).