She was described as "understanding that, as her primary role as the First Lady is visual, fashion can be a force for good used to inspire and entertain".
Other names who made the top 25 include Spice Girls singer and fashion designer Victoria Beckham, Shiloh Jolie-Pitt -- six-year-old daughter of Hollywood stars Brad Pitt and Angelina Jolie, and actress Dame Helen Mirren.
