Prince Edward's wife helped pack emergency food parcels for those affected by the coronavirus pandemic.
Dr Jane Goodall - who was interviewed last year by the Duke of Sussex for Vogue - has suggested he always intended to give his son a more regular upbringing.
It features the same long sleeves, boat neck and form-fitting design as the Duchess of Sussex's £395k couture number.
In the new series, a romantic relationship is hinted at between the monarch and friend Lord Porchester.
The actress says she spoke "gobbledygook" throughout her intimate royal meeting.