It's dress-up time. I’m not talking about Halloween costumes. I mean the real kind of dressing up—the kind that makes you stand a little taller, smile a little wider, and remember how transformative great clothes can be. It's the season when evenings stretch longer, invitations accumulate in our inboxes, and the excuse to add a swipe of lipstick and something silk feels not only appropriate, but necessary. Last night in Beverly Hills, Tory Burch hosted a soiree honoring Laura Brown and Kristina O'Neill and their just-out book All The Cool Girls Get Fired. The mood: potato chips heaving with creme fraiche and caviar, silk dresses brushing past velvet seating, and Monica Lewinsky reclaiming her White House firing with a wink and a mic-drop. My sister and I showed up in our fall finest: AYR cropped black pants, a Khaite blazer (on sale!) and Tory Burch slingbacks. Coco opted for head-to-toe Tory (um, all mine!), along with a Sea New York faux fur vest. In NYC, Mimi Nguyen turned up at a dinner party in a Mango blazer, fastened with a brooch and a resplendent Dorsey pinkie ring, while Yan Yan Chan opted for a glistening lurex evening bag and another with a studded vegan leather Dotthz tote. Paris's seasonal sparkle is manifest in Laura Vidrequin Rosa's link-laden Celine jeans, and holiday-red knit. Let's get dressed this weekend!