I should know better than to post these things to my friends list - no one ever says no to the madness here!
I'll be using the same pattern from my Queen of the Night
, which I draped myself. Really it's not that hard though. Get a bodice pattern that fits well and use ribbon and a mirror to figure out the angle of the zone. Mark in pen and trace off a new pattern. (I show this in the dress diary.) I simply cut out one of each, a full bodice and a half bodice (with zone opening), finish the fronts/neck edge separately and sandwich them together at the side seam, treating them as one when I construct the rest of the bodice.
I don't know how period correct that is and I know there are other ways to do it (some use a stomacher instead of the bodice underneath etc) but that was the method that made the most sense to me. It achives the right effect anyway. :>
You can also create an easy "false" zone with trim on a regular bodice. I've done that before and it looks rather nice...