Looking for a magical girl anime episode where the heroine is turned into a baby I'm looking for a particular episode from a magical girl anime, but I don't know the name of that anime. In the episode I'm looking for, the heroine finds a baby, and in order to communicate with it, she uses her powers to turn herself into a baby. However, because babies can't speak very well, she can't pronounce the magical words to change back. Does anyone know which anime this could refer to, and which episode? Thanks in advance.
I know a manga (which has an anime too) where a girl turned herself as a baby, but had difficulty to change back due to the "baby language", but the purpose was not for talking with another baby but for being a replacement until the actual baby is back.

The manga is Hime-chan no Ribbon, in the books, this event happened in a bonus chapter of the volume 9.