Phineas and Ferb: Monster from the Id/Gi-Ants

The boys decide to put on a traditional family Christmas special featuring their family, friends and a few very special guests, including Grammy winning recording artist Kelly Clarkson (playing herself).  The episode features three new holiday songs – Isabella's "Let it Snow," a Buford and Baljeet rendition of "Good King Wenscelas," and the whole gang singing "We Wish You a Merry Christmas."