Charlotte Ronson attends Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson attends Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson and Shoshanna Gruss attend Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson and Shoshanna Gruss attend Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson and Shoshanna Gruss attend Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson and Shoshanna Gruss attend Benefits Cosmetics premiere Glamouriety Film at Tribeca Grand Hotel on April 25, 2012 in New York City. (Photo by Jason Kempin/Getty Images for Glamouriety)

Charlotte Ronson attends the after party for the launch of Salvatore Ferragamo's Signorina fragrance at Palazzo Chupi on March 20, 2012 in New York City. (Photo by Neilson Barnard/Getty Images for Salvatore Ferragamo)

Charlotte Ronson attends the after party for the launch of Salvatore Ferragamo's Signorina fragrance at Palazzo Chupi on March 20, 2012 in New York City. (Photo by Neilson Barnard/Getty Images for Salvatore Ferragamo)