Donna Karan, Queen Rania of Jordan, Sarah Brown and Arianna Huffington

Fashion leaders came together for a cause this week, as Sarah Brown joined forces with Donna Karan and Arianna Huffington this week to host the first-ever Women: Inspiration and Enterprise Symposium in New York. The goal of the event? To celebrate female leadership in business, all while raising funds for the White Ribbon Alliance for Safe Motherhood.

A global patron for the alliance, Brown brought together a group of innovators ranging from Ashley Judd to Tavi to inspire other women from across the country. The event culminated in a rooftop fashion show featuring one-off gowns from women designers, including Vivienne Westwood, Georgina Chapman and Keren Craig of Marchesa, and L'Wren Scott. Next step? Auctioning the pieces online for the White Ribbon Alliance.

To top it all off, Estelle made a guest appearance to sing a few hits, which left the model representing Chloe dancing her heart out. A bit of inspiration, some solid fashion and a chance to let loose - not a bad combination for an autumn night in the city.