It's hard to imagine Serena van der Woodsen, Blake Lively's sophisticated, sexy, Upper East Side alter ego, batting a single perfect eyelash over something as trivial as a Broadway musical.

"I'm a huge Rent-head," Lively told Vanity Fair for a recent feature. "I met Adam Pascal the other night and I got all goofy and weird."

Goofy and weird don't cut it in the Gossip Girl milieu. Based on the novels by Cecily von Ziegesar and executive-produced by The OC's Josh Schwartz, the series dwells on a clique of unbelievably attractive Manhattan girls and boys, their rich-kid problems, and their too-rich parents.

It's all a bit rich, but just try prying your daughter away.

It's also a world away from Burbank, where Lively enjoyed a childhood that sounds disturbingly normal for someone with an actor dad, four siblings in the business, and a mom who managed child stars. Lively sang in the high-school choir and, on school-spirit days, dressed head to toe in Bulldog blue and white. She bakes.

She still says, "Oh my gosh."

Her first professional acting job was playing the laser-guided soccer vixen Bridget in 2005's The Sisterhood of the Traveling Pants. The sequel is due out next summer.

So what's her plan for not falling into the young-celebrity rabbit hole, the one monitored by TMZ and littered with undergarments, D.U.I.'s, and the residue from Wilmer Valderrama's hair products?

"You just behave yourself. How about that?"

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.