Hourglass, the cruelty-free luxury beauty brand, celebrated the announcement of Rosie Huntington-Whiteley as its first official Brand Ambassador on the evening of January 15. Held at The Sunset Tower Hotel in Los Angeles, this exclusive, invite-only cocktail party celebrated the launch of the partnership and the new Vanish Airbrush Concealer. In her new role, the beauty icon and model will collaborate on campaigns, content, events and a signature shade of Confession Ultra Slim High-Intensity Lipstick. Notable Attendees included: Constance Wu, Dakota Fanning, Becca Tilley, Kaitlynn Carter, Marianna Hewitt, Allie and Lexi Kaplan, Brittany Xavier, Carmella Rose, and Madison Grace.