LONDON, ENGLAND - OCTOBER 10: Catherine, Duchess of Cambridge, shoe detail, arrives at the London Eye on World Mental Health Day on October 10, 2016 in London, England. (Photo by Samir Hussein/WireImage)
LONDON, ENGLAND - OCTOBER 10: Catherine, Duchess of Cambridge, shoe detail, arrives at the London Eye on World Mental Health Day on October 10, 2016 in London, England. (Photo by Samir Hussein/WireImage)