I used an old patten from BurdaStyle magazine (best fitting patterns EVER) I had used in two previous occasions for shorter dresses... I've looked back in my blog, and they are not here, so they must be previous to my blogging.
I planned to use the wrap bodice for the Sirocco jumpsuit and then some jersey darted pants, so I stuck to the bodice and sleeves from Burda, and used its skirt too, but making it long to my feet and A shaped, as much as the fabric permitted.
I also added some ease at the top of the skirt, and the gathered it a little bit. The pattern had fitting darts in the back, so I gathered that extra fabric too.
I added some belt, knotted at the back, put some elastic thread along the neck opening to prevent it from gathering.