Let's make this birthday one to remember.

43 years old (Born on August 25, 1981)

American actress; She is famous from Summer Roberts in 'The O.C.' , Hart of Dixie.

Rachel Bilson graduated from Walter Reed Middle School in 1996 and Notre Dame High School in 1999. Rachel is actually good friends with the rest of the cast of The O.C. despite rumors of them fighting like the Desperate Housewives cast, which was also a false rumor. She is also good friends with Topher Grace and Zach Braff She has a younger step-sister (born 2001) and several older brothers. Is the spokesperson for Bongo jeans. Is a fan of fashion. Her favourite designers are Stella McCartney and Coco Chanel.

Measures a 34C bustline. (Source: Celebrity Sleuth magazine)

Split from her boyfriend of over two years, her "The O.C." (2003) co-star Adam Brody.

Her favorite animal are pigs; she will not eat any pork products

At age 13, she was involved in a head-on car accident, was unconscious for 4 days and as a result has a scar above her right eyebrow.

Niece of Julie Ahlberg

Graduated from Notre Dame High School in 1999

Daughter of writer/director Danny Bilson and stepdaughter of Heather Medway.

Ranked #39 on the Maxim magazine Hot 100 of 2007 list.

Attended the same high school as American Idol star Katharine McPhee

Some of her favorite actors include Kate Winslet, Johnny Depp, Audrey Hepburn, and Woody Allen.

Rachel also suffers from memory loss, migraines, and a scar above her right eye due to a car accident when she was 14-years-old.

Named #6 on the Maxim magazine Hot 100 of 2005 list.

Rachel is a huge fan of fashion and buys outfits from Marc Jacobs and Thakoon. Rachel likes men who wear fashionable shoes.

Rachel appeared in magazines such as Cosmo Girl, Stuff, Cosmopolitan, Flaunt, In Touch, and Lucky.

Her favorite animal are pigs; she will not eat any pork products.

Has a passion for basketball and is a fan of the Los Angeles Clippers.

Resides in a two-bedroom condo in Hollywood Hills that has been in her family for years with her best friend.

Rachel Bilson`s Favorites: Personalities - Johnny Depp, Cameron Diaz, Katie Holmes, Orlando Bloom, Diane Lane, Stella McCartney, and Britney Spears TV Shows - Friends, Sex and the City, Jeopardy! Book - Edie by Jean Stein and George Plimpton Designers - Coco Chanel and Sheila McCartney Hobby - Collecting vintage shoes and purses Music Album - Grace by Jeff Buckley Movie - The Goonies Holiday - Halloween Snack - Cookies Food - Cereal

Ranked as #77 in FHM's "100 Sexiest Women in the World 2005" special supplement. (2005)

Participated in stage productions of "Bye Bye Birdie," "Once Upon A Mattress" and "The Crucible."

In 2005, Rachel won the following Teen Choice Awards: Hottie Female Award, Best Actress in a Drama Series for The O.C., and Choice TV Chemistry with Adam Brody. (edit)

She has a passion for shoes and loves to shop at Target.

Attended the same high school as Kirsten Dunst, but was a grade ahead of her.

Was a recurring character on "The O.C." (2003) until she was offered a contract, and became a regular. She was added to the opening credits in the episode, "The Countdown".

Rachel Bilson has been "Punk`d", along with Adam Brody, Ben McKenzie, and Mischa Barton.

Great-granddaughter of George Bilson and Hattie Bilson

Rachel has bought Charmed star Rose McGowan`s house in the Hollywood Hills for $1.2 million.

Grandaughter of Bruce Bilson

Rachel loves My Little Pony toys. Lucky for her, the creator of The O.C. (Josh Schwartz) has an in with the developer of the toys. His father Steve is the one that came up with them.

She likes to collect vintage shoes and purses.