First Lady Melania Trump joined the president in greeting Charles, Prince of Wales, and Camilla, Duchess of Cornwall at Winfield House for a reciprocal dinner.
FLOTUS wore a red, floor-length gown with cape-like sleeves.
Pooler has inquired the name of the designer and is awaiting a response.
Meanwhile, the fashion team at DailyMail.com has identified it as this Givenchy dress:
Givenchy is headed by British native Clare Waight Keller, who is most famous for designing the wedding dress of Meghan, the Duchess of Sussex.
The dress is described as a sequin and bead-embroidered bodice panel with long cape sleeves that are slit open at the front.
And, thanks to my colleague Rebecca English, royal correspondent for Mailonline, Camilla, Duchess of Cornwall is wearing a white Fiona Clare gown.