Marchioness of Bath Emma Thynn poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Marchioness of Bath Emma Thynn (L) and British model Lady Kitty Spencer (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)

Marchioness of Bath Emma Thynn (L) and British model Lady Kitty Spencer (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)

Marchioness of Bath Emma Thynn (L) and British model Lady Kitty Spencer (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 model Lady Kitty Spencer poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Norwegian pole vaulter, Embla Matilde Njerve poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Norwegian pole vaulter, Embla Matilde Njerve poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Norwegian pole vaulter, Embla Matilde Njerve poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)