The Secret World of Mary-Kate and Ashley Olsen: Inside Their Fashion Empire, Love and Social Lives

Growing up in the 1990s, Mary-Kate and Ashley Olsen were undisputed pop culture royalty. Getting their start on Full House when they were just 9 months old, America immediately fell in love with the twins who starred as the adorably sassy Michelle Tanner on the hit sitcom for eight seasons.From there, the sisters went on to dominate the straight-to-VHS market, their smiling faces and iconic tween style (Tankinis! Butterfly clips!) enough to sell even the most outrageous plotline. They were named the youngest self-made millionaires in history by the time they were 10, and in 2004, they launched their Walmart collection of clothes and accessories, which raked in an estimated $700 million in sales thanks to millennials who either wanted to befriend them or be them.By the mid-aughts, the diminutive former child stars had reached bona fide A-list status. They became fashion It Girls, gracing the covers of Vogue and Rolling Stone while partying with Paris Hilton and Lindsay Lohan. As famous...