From their brunette hair to their dress sense, twin sisters Vicki and Valerie Darger have a number of things in common. But the 42-year-olds share more than just their looks - they are both married to the same man. The sisters are in a polygamous marriage with Joe, 43, who is also wed to a third woman - their cousin Alina. The Dargers, who are fundamentalist Mormons from Salt Lake City, Utah, live together in a large family home and have 24 children between them. Vicki, currently a stay-at-home mother, has been married to Joe, who runs a construction company,...