Rachel Bilson (born August 25, 1981) is an American actress. She is best known as Summer Roberts on The O.C., an American television "dramedy," which focuses on the lives of the beautiful and wealthy in Newport Beach, California.
Bilson was born in Los Angeles, California to an Ashkenazi Jewish American father (writer/director Danny Bilson) and an Italian American mother. Her paternal grandfather was director Bruce Bilson. Her stepmother is Heather Medway, an actress and the mother of Bilson's half sister Hattie (born December 19, 2001).
She graduated from Walter Reed Middle School in 1996 and Notre Dame High School in 1999. During her time at Notre Dame, Bilson appeared in productions of Bye Bye Birdie, Once Upon a Mattress, and The Crucible. In addition to her role on The O.C., she has appeared in 8 Simple Rules for Dating My Teenage Daughter, Buffy the Vampire Slayer, That '70s Show, and Punk'd after being tricked by Ashton Kutcher for the havoc caused by the dog that was also owned by O.C. co-star and boyfriend Adam Brody.
She recently purchased Rose McGowan's home in the Hollywood Hills for $1.2 Million and lives with her best friend Leah. She is currently dating fellow The O.C. actor Adam Brody.
She was formerly the spokesperson for Bongo jeans.
In 2005, Maxim magazine named her in the sixth spot of their annual "100 Hot List." At the 2005 Teen Choice Awards Bilson collected three awards - Choice Hottie Female, Choice TV Actress (Drama) and Best Onscreen TV Chemistry (jointly won with Adam Brody).