News Sit Down, Amal Clooney and Cindy Crawford Already Won Halloween By Lara Walsh Lara Walsh Lara Walsh is a Chicago-based writer and editor who covers all things fashion, celebrity, pop culture, travel, and food. When she’s not avidly planning her next trip, she’s writing posts for her travel blog or mapping out her next foodie adventure. InStyle's editorial guidelines Updated on October 28, 2017 @ 02:00PM Pin Share Tweet Email We can dig Amal Clooney and Cindy Crawford's high-octane approach to best of the '70s. At Casamigos' Hollywood-studded Halloween bash on Friday night, disco was the name of the game as the evening's leading ladies channeled their inner dancing queens. The human rights barrister, who welcomed twins just four months ago, was not playing around in the sequins department as she sported a rainbow-hued sparkly corset and matching flared trousers from Halpern's SS18 collection. Oversized gold hoop earrings, a berry lip, large gold sunglasses, and a fuchsia satin clutch were the perfect accessories for her disco-inspired ensemble, but the crowning detail was the British lawyer's hair, which she wore crimped and decadently voluminous for the occasion. Michael Kovac/Getty Images Meanwhile, legendary supermodel Crawford paid an ode to other '70s mainstays with heavily styled corkscrew curls, gold accessories, a white fur boa. The 51-year-old flawlessly matched her eyeshadow and lipstick to her pink and orange color-block dress, before finishing off her outfit with metallic rainbow heels. Groovy!