Can anyone help me figure out how to recreate this fitted mesh romper? I think I can create the base/lining if that is what the ruching is sewn to by using combination of measurements to draft a bodice pattern and then copying a pair of shorts that fit similarly to the lower half of this romper, however appreciate any tips, suggestions or help on the ruched outer layer. I'm not going to keep the lace up style neck will probably just keep it simple there. I will need to put in a side zip just like the original one has as well.

1.) How many sections would you say it has? Is it just a top bodice and bottom short with the seam at approximately waist level or does there need to be a third center section?

2.) For the zip insertion, do I ruche the outer layer onto the lining effectively making a single layer joined at the center front and side seams first and then place the zipper once the ruching has been permanently sewn down? 

3.) To acheive the ruching, should I be sewing two rows of stitching and then gathering to execute the all over ruched effect or would there have been another method used here? 

4.) Also is there a formula for how much extra length i should be adding to the outer layer in order to have enough to gather?

 5.) And finally I may be overthinking things and confusing myself, but i'm not sure how the center seam is made on the lower half of the garment.Would that just be four sections (2 front and 2 back) which would be ruched individually and then sewn right sides together to make a single front piece?

Thanks so much in advance for your time. Any tips suggestions or other help i can get will be most appreciated!

HELP recreating this fitted mesh mini romper?