(digitalspy.co.uk) - Mariah Carey has said that she is a "prude" when she is away from the public eye.The American singer confessed that her raunchy music videos and sexy image were not fair representations of her personality.She told Allure: "It's a dichotomy, I understand. I understand that people think I'm a ditzy moron. But I'm more like a prude! I'm Mary Poppins. "I'm what the buttoned-up girls are supposed to be."Carey, who releases new single 'Touch My Body' on March 31, replaced Janet Jackson on Saturday Night Live at the weekend. Jackson pulled out after visiting a hospital in LA last week with flu.