WALT DISNEY ANIMATION STUDIOS ANNOUNCES THE RETURN OF “ FROZEN ” FAVORITES ANNA AND ELSA IN 2015’S NEW ANIMATED SHORT “ FROZEN FEVER ” From Walt Disney Animation Studios comes the new animated short “Frozen Fever,” welcoming back to the big screen Anna, Elsa, Kristoff and, of course, the one-and-only Olaf. Directed by Jennifer Lee and Chris Buck, and produced by Peter Del Vecho, with an all-new original song by Robert Lopez and Kristen Anderson-Lopez, “Frozen Fever” marks the first project reuniting the Oscar®-winning original team from Disney’s “Frozen.” The announcement was first made within the ABC Television Network special “The Story of Frozen: Making an Animated Classic,” which aired September 2. The special also featured the world television debut of a scene from the new action comedy adventure from Walt Disney Animation Studios, “Big Hero 6,” as well as a sneak peek at the upcoming season of the ABC series “Once Upon A Time.” In “Frozen Fever,” it's Anna's birt