Lauren Conrad laughs -- laughs, we tells ya! -- at the very idea that she would offer her personal life up for public consumption. The reality starlet's rep moved quickly on Monday to quash a New York Post report that claimed she's secretly engaged to boyfriend of two years Kyle Howard. "She is not wearing a ring because she wants to hold the secret back for her new MTV show," a source alleged to the paper. The official word from Conrad's mouthpiece (via Us): "This is totally false." Adds the spokesman to Gossip Cop, "She was laughing over the story."