After weeks of speculation about her baby bump, Jessica Simpson is finally putting those rumors to rest (on Halloween, appropriately!). The singer made this announcement via her Web site “It’s True! I am going to be a mummy!” The announcement was accompanied by a picture of Simpson in her Halloween costume — a mummy, of course — cradling her belly. This baby will be the first for Simpson and her fiance, Eric Johnson. No word yet on whether the couple is expecting a son or a daughter.