I bought this fabric after a nine-day stay in Hawaii five years ago. It's got two-way stretch and good memory. The fabric has some weight to it so now it's a t-shirt dress with it's own belt.
I don't have a skirt pattern that I attach to the top pattern. What I do to extend the top pattern to a dress length is:
* measure my largest front width, and add that 10cm below the waist for the front extension. I usually make my skirts 22"long at the front.
* at the back I also measure my widest part and do the same, but make the length 23"long at the back, to cover my backside.