Where to start...the dress has a mesh lining. There are zippers, which open up to a bigger mesh vent. The front zipper zips all the way down and opens up, so you could. At the back shoulders there are also more venting mesh. It measures 39 cm across the shoulders, 49 cm across the armpits unzipped, 43 cm across the waist unzipped, 49 cm across the hips unzipped. 45 cm across the armpits zipped up, 39 cm across the waist, 46cm hips.
This item is sold from an excellent, highly rated vintage seller in Brooklyn, NY.