It's going to be a white Christmas for the residents of Nonnatus House in this year's festive Call the Midwife special...
Call the Midwife's Christmas special is one of the highlights of the festive TV listings, and this year's special is set in the Big Freeze of the winter of 1962 to 1963.
"We were given an incredible historical gift because Boxing Day 1962 was the first day of the Big Freeze," explained writer and creator Heidi Thomas.
This episode is going to be a real winter wonderland, packed with snowmen, stockings and lots of lovely festive traditions.
The Big Freeze saw a whopping two feet of snow in London, with water pipes freezing and many people unable to leave their homes, and elsewhere the snow didn't melt for three months!
But enough reminiscing! Here are some cheeky Call The Midwife Christmas special spoilers...
Call the midwife christmas special
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There's a pantomime to organise and - of course - babies to be delivered and kept warm. And in true retro Crimbo fashion, Sister Julienne has decorated her TV with tinsel. We LOVE!
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Meanwhile Barbara Gilbert (Charlotte Ritchie) and Rev Tom Hereward (Jack Ashton) spend their first Christmas together as newly weds. But, as with any good drama, Tom is given news that forces him to make a big decision.
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Newcomer Nurse Valerie Dyer (Jennifer Kirby) enjoys her first Christmas in Nonnatus House and has an emotional storyline.
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Plus there are old favourites of course, including Sister Julienne (Jenny Agutter), Sister Monica Joan (Judy Parfitt) and Dr Turner (Stephen McGann)
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Joining them will be former Eastenders star Anita Dobson, who's a huge fan of Call the Midwife, and was delighted to take part. She plays frail Mabel Tillerson who requires quite complex help from the sisters after the death of one of Dr Turner's patients. Here's a picture of her with Sister Julienne:
6 of 7When is the Call the Midwife Christmas special on TV?
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The Christmas episode will air on Christmas Day on BBC One at 7.40pm. We'll be watching with tissues at the ready!
WATCH: Call The Midwife's Christmas trailer
*This article originally appeared on *YoursYours
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