The actors watched Luca Guadagnino’s short movie projected ahead of the show.
Monica Bellucci, Isabelle Adjani and Laetitia Casta were among guests at a screening of an HBO documentary about the iconic designer.
The Oscar-winning composer wrote the score for Pierpaolo Piccioli’s solo couture debut for the label.
Pat Cleveland and Liya Kebede also turned out for the show.
Berenson will introduce Sublime Care from Marisa Berenson Natural Luxury Cosmetics in the U.S. at Neiman Marcus on Oct. 21.