you don't have to were it but it is concidered the trational dress 2 were if your a bangaldeshi or Hindu or Pakistani or south Asia and much more ... 2 find out more go and reaserach on...
Every baby is different. I would say around age 4 or into preschool they should be on the road to potty training.
Whatttttt!!!!
I say around 45 or 50 or even older..