When it comes to Christmas jumpers, the nation is divided.
Some people love how warm, cosy and festive they are, while others find them to be itchy, ugly, monstrosities.
But whatever your stance on seasonal sweaters is, when it comes to Christmas Jumper Day it is all in the name of a good cause - with thousands of people joining in and donating each year.
The annual fundraiser was launched by Save The Children in 2012, and has gone from strength to strength ever since.
Colleagues, classmates, friends and family members are invited to take part in this year's event, which is in a matter of days.
Here is everything you need to know:
When is Christmas Jumper Day?
Christmas Jumper Day is on Friday, December 15. On the day, people across the country will wear festive sweaters and donate £2 towards Save The Children. If you are fundraising in a school then the donation amount is £1, as opposed to £2.
The money raised will go towards improving the lives of children across the world - by preventing poverty, helping with health and education and fighting for their rights.
As well as wearing a seasonal knit, you can also buy official merchandise including mugs, tote bags, badges and Christmas cards.
Which celebrities are supporting the event?
Every year a host of famous faces show their support for the festive fundraiser, and this year is no exception.
The likes of Fearne Cotton, Myleene Klass, Peter Andre and Nick Grimshaw will be supporting the event this year.
Fearne said: "There is nothing I love more than dressing my whole family up in Christmas jumpers.
"I really don't shy away from over the top novelty designs. I love Christmas Jumper Day because it’s so simple to get involved and help raise money for those less fortunate all over the world.”
Meanwhile, Myleene Klass commented: "Being part of Save the Children's Christmas Jumper Day is always a big part of Christmas fun in my household.
"I've seen first-hand in countries like Bangladesh the suffering some children go through. By wearing your jumper and donating £2 you will help change lives for the better.
"My girls and I have a day in our diary to Christmas jumper shop. It gets pretty hectic as we scoot through the rails, each searching for the silliest knit."
What kind of jumper can I wear?
As long as it is festive, anything goes. It can be as wacky or as subtle as you like.
Here are some of our high street favourites: