green cocktail dress short Emerald Off-Shoulder Tiered Lace Mini – Corset Party Dress finished with a horsehair hem Zapakasa Women Dark Green Short

For their first public event as an engaged coupleheld at Goldsmiths Hall in London, a fundraising concert in support of The Royal Opera HouseDiana wore a revealing black dress that The Daily Mail reported was "two sizes too small" for her first official engagement alongside her soon-to-be husband

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She paired the midi with caramel-colored suede knee-high boots with stiletto heels by MVP Wardrobe, and her accessories included a black leather crossbody bag, gold hoop earrings, and black oval sunglasses by Miu Miu

Other top nominees included Charli XCX, Billie Eilish, Kendrick Lamar, Post Malone, Sabrina Carpenter, Chappell Roan and Taylor Swift.