Fox 411 is reporting that Patty Duke, who is best known for playing identical cousins on The Patty Duke Show will be guest starring on an episode of Disney Channel’s Liv & Maddie which features Dove Cameron playing identical twins:
In the upcoming episode “Grandma-A-Rooney,” Duke plays Grandma Janice, who visits the Rooney family to present her granddaughter Liv (Dove Cameron) with the “Porcupine of the Year Award.” But Liv’s sister Maddie (also played by Cameron) grows suspicious that it’s Janice’s twin, Great-Aunt Hillary (also played by Duke), who’s actually visiting and pulling a switcheroo.
No airdate was given for the upcoming episode.