Prince Harry and Meghan Markle are set for a "frosty showdown" with Prince William at Kate Middleton when they reunite for the Queen's Platinum Jubilee celebrations.The Duke and Duchess of Sussex are due to fly from the US to the UK along with their two children Archie and Lilibet to celebrate the Queen's record breaking 70 years on the throne next month. Harry, 37, and 40 year old Meghan shared their excitement over their pending visit to the UK, which will mark the first time all the Sussex's have been to the UK since Harry and Meghan stepped down from their roles as senior working royals in 2020.The couple will not be joining the working royals on the Buckingham Palace balcony, despite reports the Queen invited them to do so last month.