Britney Spears’ San Fernando Valley Winter Wonderland

1215_brintey_house_AKMBack home from her whirlwind world tour, Britney Spears has decked the halls of her brand new L.A. mansion with boughs of holly … and tons and tons of colorful Christmas lights.

The 30-year-old singer has spared no expense to get into the festive light-everything holiday spirit — casting a bright glow across her stuffy ultra-exclusive San Fernando Valley neighborhood.

All Brit Brit really wants for Christmas is … a huge electric bill. Clark Griswold would be proud.

Fa la la la la la la la laaaa.