FOUR new teen icons-to-be have joined the second season of the runaway Fox hit, “The O.C.”

The new crew will include a “yard boy” DJ (Nicholas Gonzales, 28) who producers hint might have a fling with Marissa, the character played by “O.C.” star Mischa Barton.

“Marissa spent the summer by herself, drinking and lonely,” series creator Josh Schwartz said yesterday during a conference call with reporters to promote the new season, starting Nov. 4.

Other newbies include Michael Cassidy, 21, as Zach, a waspy jock who’s the son of a congressman; Shannon Lucio, 24, as brainiac Lindsay; and native New Yorker Olivia Wilde, 20, as Alex, who runs The Bait Shop, a new rock club/hang out.

Schwartz says that The Bait Shop will feature performances by up-and-coming bands.

According to Schwartz, his portrayal of rich kids living in an exclusive Southern California community has turned out to be pretty close to the real thing.

“I watched the first episode of ‘Laguna Beach,’ the MTV reality series [about kids from the real Orange Country] and we’re pretty close,” he says.

Schwartz added that Linda Lavin will be making another guest appearance as a Jewish grandmother called The Nana.