A fab face is a terrible thing to waste — unless, of course, it’s covered by a Met Gala mask. 

Haute headpieces were on parade Monday night for the annual event, ringing in the Costume Institute’s spring exhibition, “Costume Art,” a celebration of the dressed body and art, opening at The Metropolitan Museum of Art, May 10.  

Nailing the night’s dress code, “Fashion Is Art,” en vogue icons stomped the museum’s swanky staircase in dazzling disguises from top fashion houses. 

Katy Perry kicked off the kookiness in a futuristic, chrome face-covering to accompany a white strapless Stella McCartney dress.

Reminiscent of protective gear worn by fencing athletes, or fashionable astronauts, the “Firework” singer turned heads in the silvery shield while wowing alongside actor Connor Storrie. 

Adding even more dashes of razzle-dazzle to her glam, the chart-topper popped metallic grills on her teeth and accessorized with tarot cards, reading, “Commit to the bit.”

Unfortunately, Perry’s headpiece de résistance garnered heaps of internet hate from keyboard critics who called her look “a mess,” and joked that “nobody wants to see her wack a–.” 

Fans of the funky finery, however, lavished the luminary with tweets of praise, lauding her fearlessness and affinity for fun. 

“Katy Perry wearing a six-finger glove and a robot mask to make fun of the past [two] years people have made AI pictures of her at the Met go viral — ICONIC,” cheered an admirer. 

Joining in on the masked madness, “All’s Fair” star Sarah Paulson donned a dollar bill across her eyes while sporting nickel-colored couture by Matières Fécales. 

Gwendoline Christie, of “Game of Thrones” fame, temporarily masked her mug with a mirror decked out in her own likeness by Gillian Wearing. The HBO series star posed behind the mask in snaps, allowing her rosy red gown, made by real-life partner Giles Deacon, custom Herbet Levine shoes and a feather headpiece to take the spotlight. 

Rachel Zegler stunned in white with a sheer face-covering, referencing “The Execution of Lady Jane Grey,” an 1833 painting by Paul Delaroche. 

Sporting Harris Reed with Chopard jewelry, 31-year-old French model, Yseult, sent hearts facing in a domed eye mask. 

Lace veiled Lisa’s face as she worked the room in custom Robert Wun, whose team created 3D replicas of her arms, which were stationed above her head in traditional Thai positions.

In celebration of aging bodies, Bad Bunny intentionally added over 50 years to his look, plastering his face on prosthetics via famed makeup artist Mike Marino. 

Teyana Taylor concealed her marvelous mien behind a silvery fringed headpiece by Tom Ford. 

“The Crown” star, Claire Foy, served soft glam beneath black sheer fabric for Erdem Moralıoğlu’s fashionable interpretation of John Singer Sargent’s 1884 seminal work, “Portrait of Madame X.”

Sza turned heads in a yellow dress by Emily Bode, who used vintage materials sourced from eBay to create a structural skirt, corset, train and a look-at-me headpiece made with a yellow floral arrangement.

Inspired by “The Veiled Vestal,” 52-year-old supermodel Heidi Klum covered her entire body — everything except her eyeballs — in foam and latex to mimic the marble masterpiece’s majesty. 

A newcomer to fashion’s biggest night, Ananya Birla, director of an Indian multinational conglomerate, slayed the scene in a sculptural mask designed by Subodh Gupta. 

Experience the Met Gala through the eyes of the front row — follow Page Six on Instagram to watch us capture every red carpet detail with Ray-Ban Meta glasses, then shop the look to start filming your own POV.