Regarding changing into the pink one that would have been done at the ambassador's residence where they flew from Windsor as it was several hours before they then went to dinner at Downing Street
President George W. Bush and Laura Bush are met by U.S. Ambassador Robert Holmes Tuttle and his wife, Maria, Sunday, June 16, 2008, on their arrival to the ambassador's residence Winfield House in London. White House photo by Eric Draper