Mischa Barton shares experience of growing up in the spotlight - Lawn Dogs was her first movie, which featured very adult themes when she was still just a child. - Had her first kiss on-screen (and in real life) in front of an entire crew in Pups. Was sexualised and became a 'sex symbol' in Asia at the time, despite being 13. - Was still a virgin when she started playing Marissa Cooper in The O.C., and felt like a 'fraud' because of it, as the show featured a lot of sex. - Was a 'teenager in an adult world', and referred to as a 'nightmare' to work with when trying to stand up for herself. Was told that her mother shouldn't remain on her team - even though she was trying to guide and protect her.