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 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 . 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: cropped black pants, a blazer (on sale!) and slingbacks. Coco opted for head-to-toe (um, all mine!), along with a faux fur vest. In NYC, turned up at a dinner party in a blazer, fastened with a and a resplendent pinkie ring, while Yan Yan Chan opted for a and another with a studded vegan leather tote. Paris's seasonal sparkle is manifest in 's link-laden jeans, and . Let's get dressed this weekend!