This dress is cut from fabric custom-printed with The Home of the Heron, an 1893 oil painting by George Innes.
The design is printed onto special paper, and then transferred using heat and pressure to become part of the fabric. This sublimation process creates a soft, breathable, vibrantly colored material.
The dress is super-comfortable, made of a smooth 82% polyester/18% spandex microfiber yarn with four-way stretch.
Each dress is carefully cut and sewn, but with this stretchy fabric it's impossible to control exactly how patterns match up, or don't match up, across seams.
The source pixels are at the Art Institute of Chicago, shared via the Google Art Project.