The O.C. Flashback Series: Summer Roberts Real High School Yearbook, Sophomore, Junior and Senior Pics

How old was Rachel Bilson when she played Summer Roberts in the O.C.? When it comes to the land of TV, often actors are cast to play characters much younger or older than their real age for some odd reason. It's became very popular for 20+ year old to play teenagers in Hollywood and it must come down to their acting ability and maturity. This was very much the case when it comes to The O.C..With that being said lets reveal Summer Roberts aka Rachel Bilson real high school yearbook photo's as well as how old he was while playing in The O.C..

Above: Rachel Bilson sophomore year yearbook photo's

Above: Rachel Bilson junior year yearbook photo's

Above: Rachel Bilson senior yearbook photo

Rachel Bilson's real birthday August 25th 1981

Real Graduating class of 1999 (Notre Dame High School (Sherman Oaks, CA)  

Harbor School (The O.C. Class of 2006)

The O.C. aired from August 5, 2003, to February 22, 2007

Rachel Bilson was 21 when she started playing Summer Roberts in The O.C. and was 25 by the time the show ended. In the O.C. world that would have made her born in 1988. So that's an 7 year difference from when she actually graduated in real life, now that's Hollywood for ya!

Stay tuned for the rest of the gang! 

The O.C. Easter Egg: House On Haunted Hill

In season 2 episode 9 "The Ex Factor" Sandy, Kirsten, Alex and Marissa are seen kicking back watching a spooky movie (in their separate houses). The movie that is being broadcast-ed (apparently the only movie channel in THE O.C.) is the 1959 smash hit "House On Haunted Hill". 

The funny thing about this whole situation is that Marissa refers to Caleb and her mother Julie's house as "The House On Haunted Hill" in season 1 episode 27 "The Ties That Bind". 

In Season 2 episode 2 Marissa and Ryan hang out at her new house. First dialog spoken by Marissa is: "So there it is, the haunted mansion.".

What makes this whole thing even more funny is the fact that Peter Gallagher aka Sandy Cohen starred in the 1999 remake of the film. 

And Lastly to put a cherry on this whole haunted sundae, Amanda Righetti Aka Kirstens little delinquent sister Hailey Nichol, plays in the 2007 remake "Return to House on Haunted Hill". SPOOOKY!!