The 23-year-old singer looked exquisite in a plunging Versace gown, as she showcased her decolletage while she posed up a storm.
She was joined by her boyfriend Isaac Carew.
She cinched her slender waist with a gilded belt and giant folds of fabric gathered around her hips.
The flamboyant gown featured matching vertiginous platform boots.
She channeled the 1960s with a voluminous hair style, which was embellished by small flower clips.
The British-born chart star glammed up with eyeliner flicks and extra long lashes.
She added a light blush and framed her eyes with neatly groomed brows.
She posed alongside her chef boyfriend, as they took their relationship up a level.
Dua - who had a smash hit with New Rules - accessoried with rings by Vram and KatKim and nails perfected by Mei Kawajiri.
Her doting boyfriend, who was a model before forging a career as a celebrity chef, brushed her lavish locks inside the party.
She broke the no-social-media ban inside the bash to show the couple together, while Isaac preened his lady love.
The Met Gala is the annual fundraiser for the Metropolitan Museum of Art's Costume Institute and is the most glittery and exclusive event on the New York fashion calendar.
It is famous for attracting luminaries of Hollywood, of fashion, music, sports, TV and the stage for an evening of fashion and charity to mark the museum's spring exhibit.
This year, the exhibit and gala are dedicated to the idea of 'camp,' as defined by Susan Sontag's 1964 essay Notes on 'Camp.'
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