LONDON, ENGLAND - MAY 18:  Prince Harry chats to designer Matt Keightley as he visits the Sentebale 'Hope In Vunerability' Garden during the annual Chelsea Flower show at Royal Hospital Chelsea on May 18, 2015 in London, England.The Sentebale - Hope In Vulnerability Garden at RHS Chelsea Flower Show was designed by Matt Keightley and is inspired by the Mamohato Children's Centre in Lesotho. The Children's Centre is due to open later this year in Lesotho and will provide support to children living wth HIV  (Photo by Chris Jackson/Getty Images for Sentebale)