First comes baby then comes marriage for Holly Madison! The former Playboy model announced via the web she's engaged! Holly revealed the news on her blog and posted pictures of the giant rock to Instagram. Holly's boyfriend, Pasquale Rotella, proposed to her on the top of a ferris wheel at the Electric Daisy Carnival in Las Vegas, how sweet! The pair welcomed their first child together earlier this year, a daughter named Rainbow. Check out pictures of Holly's ring here!