The Queen accompanied by the Duchess of Sussex, will officially open Storyhouse, Chester’s new £37 million theatre and the Mersey Gateway Bridge, at the Catalyst Science Discovery Centre.
They will also attend a lunch at Chester Town Hall.
Look through this gallery to see all the pictures of the Queen and Meghan Markle together so far.
Pictures include Meghan’s first public outing with the Queen in 2017 when she joined the Royal Family at St Mary Magdalene Church in Norfolk for the traditional Christmas day service.
You can also see pictures of the duo on the balcony of Buckingham Palace during Saturday’s Trooping the Colour parade to mark the Queen’s official birthday.
Meghan has also been pictured with the Royal Family at Westminster Abbey for a Commonwealth Day Service and the Royal Albert Hall for the Queen’s birthday party.
Not to mention on her wedding day to Prince Harry in last month.