Helena Bonham Carter could play older Princess Margaret in The Crown season 3

Helena Bonham Carteris in talks to appear on the third season of The Crown as Princess Margaret.

Actor Helena Bonham Carter has joined the third season of The Crown as Princess Margaret, reported Variety.

Helena Bonham Carter is in talks to play Princess Margaret, so far played by Vaness Kirby.

Actor Vanessa Kirby played Margaret, who is considered one of the more controversial royals, during the past two seasons of the drama.

Olivia Coleman will play Queen Elizabeth II, previously played by Claire Foy.

Netflix recently announced that Olivia Colman would replace Claire Foy as Queen Elizabeth II in seasons three and four of the show, a role that Bonham Carter had herself been linked to.

The third and the fourth season have not been officially ordered, but early production is said to be underway.