Bradley Cooper is an American film, stage, and television actor. He's best known for the role of Zachary "Sack" Lodge in the successful film Wedding Crashers.

Cooper was born in Philadelphia, Pennsylvania. His mother, Gloria, is Italian-American and his father is Irish-American. After graduating from Germantown Academy in 1993, Cooper attended Georgetown University, from which he graduated with a B.A. in English in 1997. Later, he studied at the Actors Studio Drama School at New School University.

He was married to actress Jennifer Espositoin a small ceremony on December 30, 2006. They have since divorced. On October 3, 2007 rumors came out that Bradley Cooper is dating actress Cameron Diaz after the pair was spotted together in New York.

He began his professional acting career on the television series Sex and the City in 1998. He also served as the host of Lonely Planet's Treks in a Wild World in 2000, and made his film debut in Wet Hot American Summer (2001), before landing his best-known role as Will Tippin in the successful television drama Alias (2001–2003). He returned twice to Alias as a guest star after leaving the show in 2003, and he also guest-starred on the short-lived TV series Miss Match in the same year.

Cooper starred in the AbcFamily movie I Want to Marry Ryan Banks (2004), and appeared as a regular guest star in the WB series Jack & Bobby (2004–2005). He played the popular villain Zack Lodge in the hit comedy Wedding Crashers (2005) and appeared in the film Failure to Launch (2006) as a friend of Matthew McConaughey's character. Cooper played the lead role in the Fox sitcom Kitchen Confidential, based on a memoir by chef Anthony Bourdain, which debuted in September 2005. However, Fox announced in late 2005 that the series was canceled because of low ratings.

In March 2006, Cooper starred in Three Days of Rain on Broadway with Julia Robertsand Paul Ruddat the Bernard B Jacobs Theater.

In 2007, Cooper starred in Season 5 of Nip/Tuck as Aidan Stone, a television star on the fictional show Hearts 'N Scalpels in which Christian and Sean give their advice on "real" plastic surgeries in order to give credibility to the show and gain popularity for their new practice in Los Angeles.

In 2009, Cooper starred in the hit movie He's Just Not That into You together with Ben Affleck Jennifer Aniston Drew Barrymore Jennifer Connelly Kevin Connolly Ginnifer Goodwin Justin Long and Scarlett Johansson