The annual L.A. party drew Wiz Khalifa, Robert Pattinson, Caitlyn Jenner, Kate Beckinsale, Armie Hammer, Emily Ratajkowski and James Marsden.
O’Brien’s memorial will take place on Sept. 10.
“What kind of stories would I write if I were on salary somewhere, and there was an investment into thinking of ideas, and less worry, and less calling accounts receivable? I had to try it.”
Peres’ memoir chronicles his time as an editor, a period that included an opiate addiction.
Jed Root Inc., which was bought by RPRT Group in 2015, has closed its doors.
“Men are having a moment in fashion,” said Marc Metrick. “Men need their own space.”
Publisher Condé Nast said it would name a new editor in early March.
Deputy editor Séverine Pierron left the Condé Nast title in December.