Chicchatter87 has rosie sets include dress for Mother, child, toddler and infant. Also a sleeper for the infant. You can also download a bedroom set for a child or nursery for toddler/infant. Very pretty. I downloaded them all.
This is a bit Halloween looking but still fun as an outfit for toddlers, dress and leggings. Little Witch From Paogae. See also for grown ups: New Witch, a dress as a Halloween costume. SexyWitch, but it looks almost the same to me.