I know that there's someone for every conceivable kink. Make one up and, with a thorough enough search, you will find someone who's into it.
That being said, it seems to me that women either want the man to be in power, or they want him to be a slave, an object of degradation, or something like that. Again, I know there's someone for every kink, but it seems a decidedly rare affair to run across a woman who wants a man to be a little boy, to be taken care of, catered to , spoiled, and the other things which often accompany "little" kinks. I can't remember ever encountering one.
If you know someone, a woman, who is into it, or if you know something about the topic, let me know. It's something which just now occurred to me and I would like to know more about the topic.