After all, the Good Luck Charlie star—who played the titular toddler on the Disney Channel show—started ... around the same age her onscreen sister Teddy—played by Bridgit Mendler—was ...

A few stars of Good Luck Charlie ... The Disney Channel show followed the Duncans, a close-knit family living in Denver, and each episode featured the eldest daughter, Teddy (Mendler), making ...

Teddy, as the older sister, makes a personalized video diary for Charlie, in each episode adding a nugget of wisdom for her baby sibling.