I don't know exactly what it should look like. I bought this strange but intriguing piece of fabric the other day, the pattern is big and the colors are odd, it looks very seventies to me. It just looked like from someone's blog so I got it. Now, the pattern for sewing: Since the way it looks the dress needs to be kind of slim with a wider skirt and maybe short sleeves so that the arms would be bare. Knee length. Or little longer. It is stretchy and thick so it can resemble a long pullover as well.
I have been having one pattern on my mind for a long time, it is very old, what a surprise, from the 70s, and I always liked it. (Look at her pose and a hairdo!!) It has raglan sleeves and, that is the thing, they are not short.
And as I know myself, at the end I will try to get off with it as easier as it could be and I will cut out something like this. Keep little wider the skirt. Not as elegant as the one above though.
And I will wear these knitted stockings with it. The blue will be the perfect match. My mum made them several years ago. I have never worn them, they were too tight round my thighs, now they fit well. Scary.