After years of fans' pleading, begging and all-round hoping, it's finally happened! Zooey Deschanel has signed on for a guest appearance in big sister Emily's hit show Bones! ( Read more. Spoilers for the xmas ep and an upcoming ep. )

IT'S A REAL SISTER ACT WHEN ZOOEY DESCHANEL GUEST-STARS ON "BONES" THURSDAY, DECEMBER 10, ON FOX

( HOT FROM FOX... )

( spoilers. )