Sam from The Handmade Dress also has an adorable skirt pattern ready. The two-layered skirt is so easy to put together - mine was done in an hour and a half.
It would also work beautifully with Miss Olivia Paige as a top instead of a dress. Check it out in her shop now! She has it from size 6mo to size 12 - I love it when a pattern is that versatile.