The actor, 26, made quite the entrance in a gold, velvet floor-length shawl at the London awards show.
Her ensemble, which was designed by French fashion house Schiaparelli, also featured a matching bandeau minidress with a structured, hourglass silhouette.
At one point, she removed her shawl to pose for the cameras in just the frock on the BAFTA Awards red carpet, which featured bow detailing.
Taylor-Joy finished off her head-turning look with a gold loop necklace and a pair of strappy metallic heels.
The star appears alongside Ralph Fiennes and Nicholas Hoult in the film The Menu, which is nominated for the Original Screenplay award.
The former wore a daring white dress featuring a pearl caged neckline and voluminous bow detailing.
The actor's ensemble, which she paired with an elegant up-do and minimal jewellery, was by Tamara Ralph.
Additionally, the Princess of Wales wowed in a white gown with black gloves and metallic Zara earrings.
Meanwhile, Pugh added some colour to the star-studded evening in a bright orange gown with a fishtail train.
The actor, whose look was by Harris Reed, added some punk-esque style with a spiky up-do and her trademark septum piercing.
Watch: Anya Taylor-Joy reveals she was bullied for her looks