Sissy babies, cross-dressing
A sissy baby  is a male AB/DL who mixes gender play with infantilism. This cross-dressing might involve stereotypical or exaggerated "little girl" clothing, such as frilly panties or dresses. Sissies are not necessarily transsexual in that, while some might be expressing an alter ego that is a baby girl, they might not wish to be an adult woman at other times.
A separate group enjoys the masochistic demasculinization of being dressed as baby girl, analogous to non-AB/DL masochists who enjoy being cross-dressed by force.
 Integrating other interests
The individual AB/DL may have other interests that have become integrated with AB/DL. Sissys are one example. In turn, a babyfur has integrated infantilism and furry fandom. Sissys and babyfurs are among many groups resulting from the integration of side-interests with infantilism. The combinations can themselves be combined in countless ways. For example, there are sissy babyfurs.