well I think she looks way more adorable with out the stuff on her head too and I mean her costume with the butt flap don't get me wrong her skirt is cute but people and bad guys may try to look up it and its not like baby girl who has a diaper on so even if people look up her skirt they are just going to see her diaper but with sitter they are going to see her underwear not a diaper so I think her old costume with the but flap was better and about baby girl's face it to me looks a bit puffy and a bit saggy too just to tell you.
As always, love the little details. The skirts seem so much 'thicker' with the details you used, it makes me envision them being made out of a thick vinyl material, something safe and easy to clean. Also the detail on the rubber grip soles of the booties.
Never get tired of seeing Baby-Girl and Sitter Pink~ The art style looks good. Actually I had a bit of a question that I'm not sure others have asked yet. Baby-Girl, is the design given to her meant to be more American styled comics, or more anime based? Because her design kind of looks like a combination of American and Anime at times.
I guess I have a strong influence in regards to both, but the best way to describe it I think is early anime/disney style. Kind of like Betty Boop era cartoons in the late 40's and 50's. This has always been my favorite time for animation and cartoon art. This is also right around the time where disney was influencing japanese animators which would evolve into modern anime style.
So I guess it's a throw back to that time, with a bit of a modern twist. Probably not strictly one style or the other.
I love Sitter's action pose. Baby-Girl's is a little odd but I think it's cool how tall she is. I'm guessing that's an art decision rather than an in-universe decision but it's fun to think of Baby-Girl being around 7 feet tall. It's probably not a very good idea, since it'd break the whole "Batman as a female AB" theme, but I like the idea of baddies being taken down by such a big baby. Plus, imagine how big her diapers would have to be ...