Queen Mimi and her new billionaire fiancé James Packer are officially becoming renters! Mariah Carey and Packer are renting ? for a mere $250,000 a month, that is. Carey and Packer will reportedly be shelling out the big bucks in order to rent an 18,000 square-foot mansion in the same neighborhood as the Kardashians. A source confirmed the news to E!, but we have no trouble believing it knowing that Mariah?s ring alone cost a humble $35 million, and Packer?s estimated net worth is somewhere around $4.5 billion, or more.