Friday December 12 is officially Christmas Jumper Day. And if you didn't think Christmas jumpers could be sexy, allow us to prove you wrong. SO wrong.

Staci and Holly have been kind enough to demonstrate the almighty power of the Christmas jumper in this here gallery. Dust off your scrolling fingers and behold the majesty.

But that's not the only great thing Christmas jumpers are capable of - they can also save lives, too. Save the Children's Christmas Jumper Day is now in it's third year, and they've raised 1.6 million to date.

To donate, check out their website.