US actress Katherine Waterson poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

US actress Katherine Waterson poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British model, Lady Mary Charteris poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British model, Lady Mary Charteris poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British model, Lady Mary Charteris (L) and British socialite Alice Naylor-Leyland (R) pose upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British-born French model Julia Sarr-Jamois poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

German-US model Lara Cosima poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

German-US model Lara Cosima (R) poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)