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There are plenty of history lessons to take away from watching The Crown, but it is undeniable that every season, it's the Queen's younger sister Princess Margaret and her rebellious antics that capture the audience's attention and keep people tuning in for more.

It was announced that for the fifth and final season, taking on the role of the wild child princess will be Lesley Manville.

In the first two seasons, Princess Margaret was portrayed by Vanessa Kirby, and in the third and fourth she was played by Helena Bonham Carter. Earlier this year, Carter was nominated for a Golden Globe for her performance in the third season. The fourth season does not yet have a release date, but is expected to come at the end of this year. Playing Queen Elizabeth II in the fifth season is Imelda Staunton (known to most American audiences as the villainous Dolores Umbridge in the Harry Potter series).

Though it was initially teased as a six season project by creator Peter Morgan, the fifth season of The Crown will be its last. This means the show will stop before any current royal drama revolving around Meghan Markle and Prince Harry (or even Prince Andrew and his connections to Jeffrey Epstein).

It is estimated that because of the way the series is constructed around Prime Minister terms, this final season will include the rise of Prime Minister John Major from 1990 to 1997, and the subsequent rise of the New Labour party and leadership by Tony Blair. 1997 is also the year that Princess Diana passed away in a car accident, which could very possibly be included in the final season of The Crown.

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If Manville's Oscar-nominated turn as Sybil, the icy sister to Daniel Day Lewis's Reynolds Woodcock in Phantom Thread is any indication, her take on the unruly, cocktail drinking Princess Margaret should be equally as enchanting.

Related: The Crown Will End Early, Bypassing Any Meghan Markle Drama