AnnaLynne McCord inadvertently posted a topless photograph of herself on the social networking website, twitter.

AnnaLynne McCord. PICs/AFP

The actress, who plays Naomi Clark in the updated version of popular Nineties show Beverly Hills 90210, accidentally sent the snap to female fan, Megan Lujan, after plenty of previous exchanges but also alerted the rest of her Twitter followers to it last week.