The Duke and Duchess of Sussex will join the Queen, Prince William and Kate Middleton today at the Commonwealth Day Service at Westminster Abbey.
Meghan and Harry have been back in the UK embarking on their last engagements before stepping back as senior working royals.
Monday, March 9 marks their last as they attend the Commonwealth Service with the rest of the Royal Family.
But when does the service start and how can you watch it live?
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Today marks Commonwealth Day, an annual celebration of the Commonwealth of Nations, which is held on the second Monday of March every year.
Those who want to watch the ceremony can do so as the BBC will broadcast the Service of Celebration from Westminister Abbey from 2:15pm.
The Service of Celebration will be on BBC One between 2:15pm until 4:05pm.
The ceremony will include performances by Alexandra Burke, Craig David and the Melodians Steel Orchestra.
Meanwhile, boxing champion Anthony Joshua will deliver a speech.
In attendance will be the Queen, Prince Charles and Camilla Duchess of Cornwall, Kate Middleton and Prince William as well as the Duke and Duchess of Sussex.
It will be the final engagement for Prince Harry and Meghan Markle who have made a series of royal appearances over the last few days.
From March 31, Harry and Meghan will no longer use their HRH titles as they step back as senior working royals.
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