LONDON, ENGLAND - OCTOBER 10: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge celebrate World Mental Health Day at London Eye on October 10, 2016 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - OCTOBER 10: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge celebrate World Mental Health Day at London Eye on October 10, 2016 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)