Claire Foy & Matt Smith Celebrate New Play 'Lungs' in London

Claire Foy and Matt Smith pose together as they attend a party celebrating their new play Lungs on Saturday night (October 19) at The Old Vic Theatre in London, England.

The 35-year-old actress kept things chic in a black top and black trousers with a feathered hem while the 36-year-old actor looked handsome in a black trench coat over a white T-shirt and black jeans for the party.

PHOTOS: Check out the latest pics of Claire Foy

If you forgot, Claire and Matt starred as Queen Elizabeth and Prince Phillip in the first two seasons of The Crown on Netflix.

Written by Duncan Macmillan, Lungs is a two-character play that follows a couple named M and W, as they reflect upon what it means to give birth in today’s society, with questions of carbon footprints and political dilemmas asked.

Lungs will be running on stage through November 9th. You can get tickets here.

10+ pictures inside of Claire Foy and Matt Smith at the party…