In the BBC One series, Joanna sports her trademark bouffant blonde bob – a style she's been rocking for years. But did you know that the 78-year-old has been dyeing her hair for aeons?

Read more: Celebs Who Damaged Their Careers With Plastic Surgery We knew that Joanna Gaines looked great without makeup. We also knew that Gaines would look great with blond hair if she ever ...

Dame Joanna Lumley is back on screens tonight ... Although best known as a blonde, she sported long brunette hair in the show, looking a million miles away from her Ab Fab persona.