What's Gwen Stefani's Christmas song called??

I heard it on a radio and im pretty sure it was Gwen Stefani.
It was a Christmas song and was slow.

I can't really remember it much, but it was kind of like ....
'Freezing cold, ....snowing ...'

Sorry thats all i can remember.

Does anyone know, please?

Thanks!!
Merry Christmas xx

"Early Winter" from The Sweet Escape is being played as a sort of Christmas song...

She also does a fast one with No Noubt called "Oi! to the World" on "A Very Special Christmas, Vol. 3."