The 22-year-old model wore a cleavage-baring Vivienne Westwood gown, which she accessorized with a sparkling two-strand necklace. The British star, who often sports jeans and sneakers in her down time, wore her hair in simple curls.
Delevingne was honored with Best Breakthrough Actress at the ceremony. The annual awards show, hosted by Elle magazine, recognizes fashion designers, models, actors and other entertainers. Singer Taylor Swift walked away with the coveted Woman of the Year accolade.
Delevingne mingled with the likes of Swift, model and friend Jourdan Dunn, actress Rebel Wilson and singer Ellie Goulding. Goulding proved a fan of the model's look, tweeting, "I love @Caradelevingne's boobs!!! Wow!! They are my new best friend. Thank you Cara."
Delevingne is known for her work with Burberry, Yves Saint Laurent and Chanel, and is also pursuing a career in acting. She made her film debut as Princess Sorokina in Anna Karenina (2012), and is scheduled for an adaptation of the John Green novel Paper Towns and the DC Comics film Suicide Squad.