Meghan Markle is said to be "nervous" ahead of her reunion with the Royal Family during the Queen's Jubilee, a royal expert has said.The Duchess of Sussex, 40, is due to jet to the UK from the US later this week alongside her husband Prince Harry and their children Archie, two, and Lilibet, who turns one on 4 June. Meghan and Harry's family trip marks the first time the pair have travelled to the UK with their children since they moved to California in 2020.