She has a very open relationship with her mother, Janice Stango, a sex therapist who, according to Bilson, instinctively knew when she lost her virginity: 'Oh, yeah. Weird, but helpful.'Bilson began her teenage years 'hanging out with probably not the best group of guys'. A shard of windscreen had cut open her head - she was left with a small scar beneath her hairline and she still suffers headaches and memory problems as a result.
She recently told Playboy that 'friends will say, "Remember when we were at this or that place? I don't have ADD [attention deficit disorder] per se, but I definitely have a hard time paying attention for a long period of time, and I think it's because of that accident.' Thankfully, no one died in the crash but one of the boys in the car was paralysed.
But I'm here to talk to her about Jumper, a special-effects-heavy, big-budget action thriller about teleporting that is tipped to become a money-spinning trilogy à la The Bourne Identity.
Bilson was busy shooting the final series of The OC when she received a text message from Doug Liman, the celebrated director of Swingers, The Bourne Identity and Mr and Mrs Smith.
A kind of Beverly Hills 90210 redux, the show had a wry, knowing tone and self-referential wit that enabled fans to defend their guilty pleasure as 'post-modern'.