Speaking of Blake Lively, it's her 21st birthday today. Happy birthday, Blake Lively! You know who else's birthday it is? Serena Van Der Woodsen 1.0, Rachel Bilson. She turns 27. Happy birthday, Rachel Bilson! Wait a second, both The O.C. and Gossip Girl were both created and produced by Josh Schwartz. What does it all mean? Could it be that ...