The Crown series four: Olivia Colman, Emma Corrin and Gillian Anderson attend ...

The Crown series four has commenced filming in London, ahead of an expected release later this year.

And stars Olivia Colman, Emma Corrin and Gillian Anderson looked incredible as they attended the The Crown Set Visit at The One Aldwych in London on Monday.

Queen Elizabeth II actress Olivia, 46, looked casually chic in a black dress paired with a matching crimped jacket as she promoted the new series.

The Crown: Stars Olivia Colman (above), Emma Corrin and Gillian Anderson looked incredible as they attended the The Crown Set Visit at The One Aldwych in London on Monday

The Crown: Stars Olivia Colman (above), Emma Corrin and Gillian Anderson looked incredible as they attended the The Crown Set Visit at The One Aldwych in London on Monday

Talented: Emma Corrin plays Princess Diana in the new series

New: Gillian Anderson plays Margaret Thatcher

Talented: Emma, 24, who joins for the new series as Princess Diana, pulled off a flawless floral look while Margaret Thatcher star Gillian Anderson looked chic in a cream blouse

The Oscar winner wore her newly dyed bob while her pretty features were enhanced with fluttery lashes and berry lipstick.

Emma, 24, who joins for the new series as Princess Diana, pulled off a flawless floral look as she joined her co-stars.

The looked markedly different from the on-screen Diana as she sported curly brunette tresses.

Gillian, 51, who plays former Prime Minister Margaret Thatcher, looked effortlessly chic in a cream blouse and black spectacles as she sat on the panel.

Screen success: Queen Elizabeth II actress Olivia, 46, looked casually chic in a black dress paired with a matching crimped jacket as she promoted the new series

Icon: The star is pictured in character in series three, where she made her debut

Screen success: Queen Elizabeth II actress Olivia, 46, looked casually chic in a black dress paired with a matching crimped jacket as she promoted the new series

Monarch: Queen Elizabeth II is pictured visiting Aberfan in Wales on October 30, 1966

Monarch: Queen Elizabeth II is pictured visiting Aberfan in Wales on October 30, 1966

Talent: The beauty looked markedly different from the on-screen Diana (R) as she sported curly brunette tresses

Filming: Emma is pictured playing Diana in series four

Talent: The looked markedly different from the on-screen Diana (R) as she sported curly brunette tresses

Much missed: Princess Diana is pictured in October 1989 at the London Coliseum

Much missed: Princess Diana is pictured in October 1989 at the London Coliseum

The group were also joined by Princes Charles actor Josh O'Connor, 29, Prince Phillip actor Tobias Menzies, 45, and Princess Anne actress Erin Doherty, 27.    

Blonde Emma has been seen on the show's set several times in

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