Nesting dolls are a wonderful addition to a child's toy collection. My oldest daughter has used this nesting doll for a long time now and she still has interest in it. She delights in opening the last doll to find the "baby" inside. Recently, I added the two largest dolls to my youngest daughter's (19 months) activity shelf.
She is able to open and put the dolls back together and is working on the "nesting" part of it.