It seems only fitting that on Mother's Day, E! aired a special showing former Playboy playmate Holly Madison go from girl next door to new mom. In the episode, Hugh Hefner's ex-girlfriend showed home footage of the day she delivered her daughter, Rainbow as well as the news that her and her boyfriend have set a wedding date. Watch the video above to find out when the two will be walking down the aisle.   Did you watch the show? Tell us in the comment section below and tweet us @OKMagazine.     MORE VIDEOS ... Read More >>