Inside 'hidden' lives of millionaire twins Mary-Kate and Ashley as they turn 40

Mary-Kate and Ashley Olsen celebrate turning 40, marking a transition from child stars to fashion magnates. They rose to global fame as Michelle Tanner on Full House from 1987 to 1995 and later built a multi‑million dollar empire through Dualstar Entertainment. In the 1990s and early 2000s they headlined a string of popular family films and TV projects, before retiring from acting in March 2012. Since then, they shifted focus to luxury fashion labels The Row and Elizabeth and James, with Ashley serving as the CEO and Mary-Kate working as the Creative Direct. The Row, founded in 2006, has become a benchmark in quiet luxury, guiding their ongoing brand-building beyond screen careers.