She has orchestrated a string of critical interviews, refused a palace plea for her discretion, and claimed responsibility for the photoshoot that brought the royal wedding into headlines for all the wrong reasons.

But Meghan Markle’s estranged half sister has not given up hope of seeing her in person for her wedding to Prince Harry.

Samantha Grant has said she would still like to give a “sentimental” wedding present to the couple in person, despite not being invited to the Windsor Castle celebrations.

Thomas Markle, her father, is allegedly undergoing medical treatment for a heart condition which, in the most recent of many pronouncements, he has said will leave him unable to travel to walk his daughter down the aisle.

Kensington Palace have not commented on the claims, with observers left mystified over this week's rapidly developing events.