Moms, do you put your baby a onesie on in the summer under their clothes?
Dressing babies in onesies under their clothes during the summer will most likely make them uncomfortable. A cotton short-sleeved bodysuit that is light enough should be perfect. Be sure to add layers when things cool down.
Depends on how hot it is outside or in the house. Calls for a judgement. An overheated baby is not going to be happy.
Onesies hold the diaper in place... So just the onesies in the summer should be fine.