The mass-market beauty company had $96.8 million in sales for the first half of 2016.
Rights groups applaud the decision as a victory for individual and religious freedom.
Andy Janowski and Samantha Cameron, creative consultant and Britain’s First Lady, hosted the party at the newly refurbished store on Bond Street.
Kate Moss and Alexa Chung were among those seated front row at the spring show.
Plans call for the 51-year-old fashion house to open about 15 directly operated stores and shops-in-shop a year, all under the new Saint Laurent banner.
In her capacity as BFC ambassador, Samantha Cameron thanked outgoing chairman Harold Tillman for his service.