Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Meghan Markle arrives at the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Meghan Markle arrives at the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Meghan Markle arrives at the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Meghan Markle arrives at the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle attends the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Chris Jackson/Getty Images)Photo by: Chris Jackson Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle attends the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Chris Jackson/Getty Images)Photo by: Chris Jackson Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry attends the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Chris Jackson/Getty Images)Photo by: Chris Jackson Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle attends the Terrance Higgins Trust World AIDS Day charity fair at Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor Castle in May 2018. (Photo by Chris Jackson/Getty Images)Photo by: Chris Jackson Prince Harry and fiancee Meghan Markle arrive at the Terrance Higgins Trust World AIDS Day NOTTINGHAM, ENGLAND - DECEMBER 01: Prince Harry and Meghan Markle visit Nottingham Contemporary on December 1, 2017 in Nottingham, England. Prince Harry and Meghan Markle announced their engagement on Monday 27th November 2017 and will marry at St George's Chapel, Windsor in May 2018. (Photo by Christopher Furlong/Getty Images)Photo by: Christopher Furlong