Gillian Anderson puts on a busty display in strapless dress as she makes rare public appearance with The Crown creator beau Peter Morgan

They have maintained a steady yet low-key romance since 2016.

And Gillian Anderson made a rare public appearance with her writer boyfriend Peter Morgan as the pair enjoyed dinner at Scott's Restaurant in Mayfair, London on Monday.

The X-Files star, 50, put on a busty display in a strapless black gown as she joined Peter, 56 - who is best known for creating and writing The Crown - in the back of a black cab. 

Happy couple: Gillian Anderson made a rare public appearance with her writer boyfriend Peter Morgan as the pair enjoyed dinner at Scott's Restaurant in Mayfair, London on Monday

Happy couple: Gillian Anderson made a rare public appearance with her writer boyfriend Peter Morgan as the pair enjoyed dinner at Scott's Restaurant in Mayfair, London on Monday

The figure hugging dress featured a racy zip down across the decolletage, before cinching in at The Fall star's trim waist.

She layered up in a pinstripe blazer and completed the ensemble with shimmering silver sandals.

Her blonde bob was styled in a coiffed side part while her pretty features were enhanced with feline flicks of liner.

Peter looked dapper in a black shirt worn with a matching tailored suit as he took a seat by his love. 

Chic: The X-Files star, 50, put on a busty display in a strapless black gown as she joined Peter, 56 - who is best known for creating and writing The Crown - in the back of a black cab

Chic: The X-Files star, 50, put on a busty display in a strapless black gown as she joined Peter, 56 - who is best known for creating and writing The Crown - in the back of a black cab

Busty: The figure hugging dress featured a racy zip down across the decolletage, before cinching in at The Fall star's trim waist

Busty: The figure hugging dress featured a racy zip down across the decolletage, before cinching in at The Fall star's trim waist

Reports that Gillian had found love again broke in October 2016 when The Daily Mail's Sebastian Shakespeare confirmed that she was telling friends about dating writer Peter.

Gillian who lives in London, was at a party in New York with Morgan to promote The Crown, where she was overheard telling friends they were in a relationship.  

Peter, whose cinematic hits include The Queen and Tinker Tailor Soldier Spy, was married to Lila Schwarzenberg - born Princess Anna Carolina zu Schwarzenberg - until 2014. He already has five children with her.

Since the relationship revelation, Gillian supported Peter when The Crown went up for a nomination at The Golden Globes. 

Gillian has daughter Piper with ex husband Clyde Klotz, who she was married to from 1994-1997.

She shares two sons Oscar, 12, and Felix, 10, with ex boyfriend Mark Griffiths, who she split from in 2012.

Iconic: Gillian is best known for her role as Special Agent Dana Scully in The X Files

Iconic: Gillian is best known for her role as Special Agent Dana Scully in The X Files 

Gillian Anderson makes rare public appearance with The Crown creator beau Peter Morgan 

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