Simon Cowell’s pregnant girlfriend, Lauren Silverman, brought the TV mogul to visit her mother in her hometown Miami over the weekend. Cowell and Lauren, who are expecting a boy, dined Friday at Prime Italian’s street-side terrace, where, we’re told, “They did little to keep their evening private. Seated front and center, Cowell was signing autographs and taking pictures with fans.” The next day, they were spotted sitting outside Lucali Pizza in Sunset Harbour. A spy said, “They were talking about property as she was talking about the number of bedrooms they would need.” We’ve reported that Cowell is selling his LA bachelor pad for $20 million to buy a family home.