Celebrity photographer Terry Richardson has been accused of offering to book model Emma Appleton a Vogue magazine shoot in exchange for sex.On Sunday, Appleton posted a screenshot of a message to Twitter, allegedly sent by Richardson, that read: "If I can [f**k] you, I will book you in my for a.shoot [sic] for Vogue." RELATED PICS: InstaGrab--What Are the Stars Sharing?Read more on NewsOK.com