What age do toddler dress and undress themselves?

With exposure (often in cc setting), usually at 3yo can pull down and pull up pants. Some can do it at 24mths. With exposure. Without exposure, some 4yo usually will have the initiative to want to do it themselves. That's when u know they're ready and you will teach them how to dress up. By then, their motor skills also good already. Overall, I'd say don't worry. Every child picks up differently. U just need to look for signs that your child is ready for a new skill or not and teach/intro accordingly. 😊😊