LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge hugs a runner as she hands out water during the 2017 Virgin Money London Marathon on April 23, 2017 in London, England. The Duke and Duchess of Cambridge and Prince Harry, are spearheading Heads Together, in partnership with eight leading mental health charities, that are tackling stigma, raising awareness, and providing vital help for people with mental health problems. (Photo by Chris Jackson - WPA Pool/Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge cheer on and hand out water to runners during the 2017 Virgin Money London Marathon on April 23, 2017 in London, England. The Duke and Duchess of Cambridge and Prince Harry, are spearheading Heads Together, in partnership with eight leading mental health charities, that are tackling stigma, raising awareness, and providing vital help for people with mental health problems. (Photo by Chris Jackson - WPA Pool/Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge hugs a runner as he hands out water during the 2017 Virgin Money London Marathon on April 23, 2017 in London, England. The Duke and Duchess of Cambridge and Prince Harry, are spearheading Heads Together, in partnership with eight leading mental health charities, that are tackling stigma, raising awareness, and providing vital help for people with mental health problems. (Photo by Chris Jackson - WPA Pool/Getty Images)
