Quote - This image shows the side profile of the silver leotard quite well...

Great side-profile!  I see a correction I need to make.  The large, wide belt worn in most photos covers up the details of the outfit underneath.  Specifically, the front and rear hip panels are more scallop shaped than I thought, as shown in this photo.   You can't see that detail in the other photos because of that darn wide belt.

BTW, you mentioned a rear "clasp."  Now, the way I see it, there's no need for a clasp in that uniform unless it is holding the rear vertical strap to the rear panel.  There wouldn't be a need for one to relax the waist area for disrobing.  However, could it be something to do with the wide belt?

PS - You may not see a reply from me for several days, considering the Holiday weekend here in the States.  However, don't fear, I'll be back with more updates and hope to have this finished in short order!