A source close to the situation explained:
Girl has gotten totally festive! Woohoo!
This is Britney Spears' gorgeous Calabasas casa, decked out with all the treats and trimmings of Christmas! Girl has gone all out this year!
Looks totally fab!
Hey, if we drive by, will the lights twinkle in tune with our fave Christmas jam, My Only Wish?!
If not, GET ON THAT!
[Image via Pacific Coast News Online.]