The BAFTA-nominated costume designers discussed the “chemistry” between actors and their costumes.
But the mariachi band was still in the house.
British actresses and others want to show solidarity with their American colleagues who wore black to the Golden Globes earlier this month.
“The Shape of Water” received twelve British Academy nominations while “Darkest Hour” and “Three Billboards Outside Ebbing, Missouri” each had nine.
The Duchess of Cambridge donned an off-the-shoulder floor-length black floral gown by Alexander McQueen.
Tom Ford, Jeremy Irons and Sam Taylor-Johnson were among the guests at the party.
The event was held at London’s BAFTA theater ahead of Sunday night’s awards ceremony.