The reunion of the Duchesses comes after Meghan’s busy calendar of Royal duties, which have seen her and Prince Harry spend time in Morocco, whilst Kate and William have been on Royal duties in Northern Ireland.
The event hosted by the Queen, saw Kate, the Duchess of Cambridge, wearing a pale-green floaty dress with buttons down the front and matching clutch.
Meghan, the Duchess of Sussex, wore a long cream coat and stunning floral dress, teamed with a silk clutch and neutral shoes.
The Duke and Duchess of Sussex, Duke and Duchess of Cambridge, and the Duchess of Cornwall, along with Prime Minister Theresa May, were among the guests at the event honouring Charles’s contribution to the national life of Wales over the decades.
Charles arrived at the event with Camilla and his sons and their wives – William and Kate and and Harry and Meghan in step with the heir to the throne as he entered the White Drawing room.
Welsh band Stereophonics, who were supported by the Prince’s Trust in their early days, were also at the event, as was Games Of Thrones star Owen Teale.
Charles was created the Prince of Wales at the age of nine, on July 26 1958, and was formally invested with the title at Caernarfon Castle by the Queen on July 1 1969.
The investiture regalia he wore was on display, including the coronet, sword, ring and rod, as well as the Letters Patent for the creation of Charles as Prince of Wales in 1958.