Kardashian wants guests to leave the wedding thinking, "Oh my God, that dress!" she told Ryan Seacrest's KIIS-FM radio show Friday. "It's all about the dress." What about those supposedly green bridesmaids dresses sister Kourtney Kardashian Tweeted about? It was a red herring, says Kim, who let out a little laugh when she revealed to Seacrest that "Kourtney and Khloe keep on Tweeting all the wrong information" about the wedding.