Miriam Margolyes could barely move in the wimple she was forced to wear for "Call The Midwife".
The 76-year-old actress is set to feature in the Christmas special and episode one of series eight of the BBC period drama, and Miriam has admitted that she struggled to perform while wearing the cloth headdress, which covered the head, neck and sides of her face.
Appearing on ITV's "This Morning", Miriam told hosts Holly Willoughby and Phillip Schofield: "I think you'll be rather impressed with how I look in my wimple.
"It was rather a struggle to get it on. It's a bit restricting, you can't open your mouth or do anything that you might want to do."
Despite this, Miriam admitted to relishing her time on the set of the show, hailing her co-stars as a "fabulous" group of actresses.
And Miriam reserved particular praise for Jenny Agutter, describing her as the "leader" of the team.
She said: "It's lovely to be with all of those fabulous actresses. It's a very happy company and Jenny Agutter - who is the leader, really - she's such an amazing person."
"Call The Midwife" premiered on the BBC in 2012, but Heidi Thomas, the show's creator, recently insisted she hasn't come close to running out of plotlines.
She said: "It is an immense privilege to be starting work on series eight of "Call The Midwife", and we can't wait to share the events of 1964 with our loyal and passionate audience.
"People often ask me how we can keep coming back year after year, but the answer is simple - we never run out of stories, and we never run out of love."