**STRICTLY EMBARGOED UNTIL 2230 BST SUNDAY MAY 19** The Duke and Duchess of Cambridge, Prince George, Princess Charlotte and Prince Louis visit the Adam White and Andree Davies co-designed 'Back to Nature' garden during build week ahead of the RHS Chelsea Flower Show, London, UK, on the 19th May 2019. Picture by Matt Porteous/WPA-Pool **STRICTLY EMBARGOED TO 2230 BST SUNDAY MAY 19** EDITORIAL USE ONLY. 19 May 2019,Image: 434580729, License: Rights-managed, Restrictions: NO United Kingdom, Model Release: no, Pictured: Catherine, Duchess of Cambridge, Kate Middleton, Prince Louis, Credit line: MEGA / The Mega Agency / Profimedia