Eventually, we saw Gamora looking less like a warrior or assassin, and wearing an outfit that was more functional.
Park had previously posed a similar design which saw Gamora without the cloak, but instead wearing a sort of armor, which we assume is still on underneath the cloak in this image.
Park said it was the wrong direction for what James Gunn was looking for from Gamora in Guardians of the Galaxy Vol. 2.
The outfit clearly has a sort of Assassin’s Creed thing going on.