Mariah Carey has a favorite room in her house ? and it?s stacked like a gold mine. The singer showed off a small section of her huge -- and perfect -- shoe collection and it's a wonder she can get out the door at all with all those choices. The collection is only gonna get bigger now that she?s dating billionaire James Packer , who's got more than enough coin to buy Mimi more gold Manolos. Not that she needs them.