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](http://myanimelist.net/anime/2037/Hime-
chan_no_Ribbon), in the books, this event happened in a bonus chapter of the
volume 9.

![http://a.mfcdn.net/store/manga/558/cover.jpg?1419502322](https://i.stack.imgur.com/oWtRU.jpg)

