Lead actor Logan Lerman was unable to attend Summit’s preem of “The Perks of Being a Wallflower,” so co-star Ezra Miller carried around a life-size cardboard cutout at Monday night’s premiere. Pic unspooled at the ArcLight Cinerama Dome while the afterparty was across the street at club Lure.

Emma Watson and Miller grew close during the shoot thanks to a dance routine. “You can’t not bond with someone or get to know someone if you have to dance with them,” Watson said. “He was dropping me and I was standing on his toes.”

Adapting his own novel, writer-director Stephen Chbosky shot the film in Pittsburgh, where he was born and raised.

“My parents got $1,500 of location fees for their house,” he said. “They’re very happy.”

Producers Lianne Halfon and Russell Smith (“Juno”) are no strangers to stories about teenagers, but they weren’t looking to make another high school-set film until they read the book. “We thought we had graduated,” Smith joked. “They kept us back a year.”