On the list of powerful grandmothers, there aren't many who can top the Queen of England. Queen Elizabeth II, 86, has ruled the U.K. since 1952; her great-grandchild-to-be will someday inherit that throne -- and a family fortune of more than $1 billion. Kardashian matriarch Kris Jenner, meanwhile, has an empire of her own, including her family's multiple E! reality series, her daughters' fashion and beauty lines, and a new talk show premiering in July. Their net worth? An estimated $80 million.