Claire Foy's 'I Don't Do Blue' Autograph Video Goes Viral, Fans Seemingly Explain Why She Won't Sign Photos with Blue Ink

How 'The Crown' Brought Back Olivia Colman and Claire Foy for Queen Elizabeth II's Final Scenes

How ‘The Crown’ Shot Its Emotional Final Scenes With Imelda Staunton, Olivia Colman and Claire Foy

Claire Foy, 39, puts on an elegant display in a black blazer as she appears on Jimmy Fallon's The Tonight Show... after her return to The Crown