I made this dress back in August.
(Yep, way behind in posting my projects, there's more coming.)
I did the same thing as my simple dress tutorial, which is really quick to whip up. Unlike adding a skirt to a shirt (which is even easier) I added a tube of fabric.
I made it out of some really cute jersey knit speckled with birds, snails, butterflies and flowers.
As an added bonus the five strand headband I made her a couple of years ago goes perfectly!