The legendary Carol Burnett and Tracey Ullman - two "queens of comedy" and both six-time Emmy Award winners - top a spectacular cast of the made-for-television movie “Once Upon a Mattress.” The "Wonderful World of Disney" presentation of the delightful musical will air Sunday, Dec. 18, on ABC.

The special will also feature Tony Award winner Denis O'Hare (Broadway's "Take Me Out"), Elf star Zooey Deschanel, Spin City and Arli$$ star Michael Boatman, Frasier's Edward Hibbert, Broadway heartthrob and Tony nominee Matthew Morrison ("The Light in the Piazza," "Hairspray," Sex and the City) and the irrepressible Tom Smothers.