Honestly, there is no cookie cutter answer for this that everyone will agree on, but this is my stance on it...
Littles have a specific persona that is an age regression that they switch into to some extent. It usually includes toys, cartoons, sometimes pacifiers, etc. but it almost always involves activities that are decidedly child-like. For some it’s only in the bedroom.
Babygirl more so a loose term for the lifestyle as it's more often used by others who engage in DD and have a childish/bratty submissive nature. Though they may engage in childish activities. It's also used in the lifestyle as a term for endearment.
Personally, a little is usually someone with a very decided difference between their adult persona and their childish one. Babygirls don't often participate in age regression and it's more of a flirtatious and seductive with a hint of childish persona, if that makes sense??
Edited by Maids, 14 April 2019 - 10:04 PM.