Via TV Guide:
In a first for the Disney Channel, next season an episode of Good Luck Charlie will feature a family with two moms. Producers are currently casting the couple, with production set for next week. The episode will air in early 2014 as part of Good Luck Charlie’s final season. Because Good Luck Charlie is coming to a close, the characters are only expected to appear in this one episode. In the storyline, parents Amy and Bob Duncan (Leigh-Allyn Baker and Eric Allan Kramer) set up a playdate for preschooler Charlie (Mia Talerico) and one of her new friends. When the kid arrives, the Duncans learn that Charlie’s pal has two moms. That’s fine, but the potential new friendship is put to the test as one mom chats with Amy, and the other is stuck listening to Bob’s dull stories.