(entertainmentwise.com) - Ashlee Simpson and husband Pete Wentz are almost one hundred percent sure they are going to have a baby boy this Autumn. The Fall Out Boy bassist announces the news in the latest issue of Playboy, saying, "We know with 90% accuracy that it's a boy, and our due date is around Thanksgiving."He went onto say that picking a name will definitely be tricky as it needs to be suitable for a rock star - but let's face it, the little'un already has a head start with two pop star parents. He said, "We don't have any names yet. My friend Andrew said, 'Your kid has to have a name that would fit either a rock star or a senator.'