Preethi from WIDI shares a free pattern for making her Aanchi nightgown for a toddler girl.  It loose fitting dress gathered on to a wide round yoke. It doesn’t have to just be a nightgown, though.  This style is also makes pretty dresses.  Her free pattern makes a size 2T.  If you need another size, you could probably adjust it up or down using a shirt that fits your child to gauge the size.  Go to WIDI for the pattern and tutorial.

[photo from WIDI]