Last night in New York City, Ryan MurphysFeud: Capote vs.

The Swansmade its grand world premiere, with the whole cast showing out for the affair.

Cast members Molly Ringwald, Diane Lane, and Naomi Watts also joined the glitzy fashion spectacle.

Mothers The Swans Red Carpet Did Not Disappoint

Photo: Getty Images

Call it a mother-off!

The actors duly adhered to the night’s style memo, which was to show up in sophisticated black-and-white.

The elegant designs were embellished with sequins, bows, and trains, trains, trains.

Demi Moore in Balmain

Moore, for one, nailed thematic dressing with a Balmain gown that featured a carved swan bustier.

Other highlights from the step and repeat?

was maximalist, but refined.

Chloe Sevigny in Christopher John Rogers

Quite simply, were obsessed.

Below, see all of the looks fromThe Swanspremiere.

Naomi Watts in Givenchy couture

Diane Lane in Cristina Ottaviano

Calista Flockhart in Zuhair Murad