The 2026 Met Gala is officially underway, and the glitterati of Hollywood and beyond are descending on the most glamorous red carpet of them all as we speak. This year's theme is "Costume Art," which is the same name of the Metropolitan Museum of Art's spring exhibition. The dress code is "Fashion Is Art," which means we're going to be seeing plenty of sartorial splendor on those hallowed museum steps this evening. However, beauty fans know that there is no complete look without a drop-dead-gorgeous hair and makeup look, or a set of perfectly-manicured nails. That's why I'll be reporting every celebrity and her (or his) glam choices live as arrivals hit the carpet. Beyoncé , Nicole Kidman and Venus Williams will serve as co-chairs for this year's Met Gala, alongside lead chairperson and Vogue 's global editorial director Anna Wintour.…