Sexy supermodel Cindy Crawford snapped at a fan during a signing session in Dallas, Texas recently - when he asked her to autograph a copy of men's magazine Playboy. The bold fan took his copy of the 1998 Playboy, which featured nude shots of Crawford - and asked the model to sign away. But Cindy was far from amused, according to the National Enquirer, and she stopped the session - at Bachendorf's jewellery store there and then. A fellow fan says, "Cindy was furious." Sources tell the publication that Crawford was told she'd only be signing promotional pictures of her wearing an Omega watch she was there to promote, and when she was handed the Playboy spread she was surprised. The fan adds, "Security promptly threw the fan out." An event spokesperson confirms the incident, explaining the model was put in an awkward position after all fans were told she would only sign authorised photographs, provided at the event.