She would also be granted another title, depending on which Prince Harry inherits – most likely Duke of Sussex, making Markle the Duchess of Sussex.
In the same way, when Prince William married Kate, they became the Duke and Duchess of Cambridge respectively.
The Duke and Duchess of Sussex titles are currently up for grabs, as are Clarence and Buckingham.
Getting ahead of ourselves? Perhaps. But with rumours swirling that Markle is quitting Suits and moving in with Prince Harry to Kensington Palace, you just never know.