In any case, here is how I arrived at this design. I found instructions on the v-back collar in the text Patternmaking for Fashion Design
I followed it closely and noticed that it came out sort of more enormous than I had first imagined.
All in all, it's pretty fabulous ... I decided to pleat it at the back V to give it a bit more interest. I also employed the elastic in the hem to give it some fun versatility.
Oh, and the Moo Moo is perfect for jumping in against a beautiful blue sky ... in case you were wondering. Can Optimus Prime do that? Probably.
Thanks for looking!