Mischa Barton Joins the Cast of Gossip Girl?

Mischa Barton unfortunately won’t be joining the cast of CW’s catty prep school drama Gossip Girl.

TV Guide first reported that the 22-year-old former O.C. star had been approached to play Georgina Sparks, an old friend of reformed party girl Serena van der Woodsen (Blake Lively).

But her rep tells Us Weekly, “She will not be on the show. She was approached, but her reps passed.”

FYI: Josh Schwartz created both The O.C. and Gossip Girl.

All-new episodes of Gossip Girl star Monday, April 21.