A company from whom I have been ordering cuts for YEARS has done it to me again. They have discontinued a fabric critical to my purpose! Long ago, I planned this project for silk net I can no longer source. So, I have settled for silk net organza, which is a much more dense weave than I prefer, but it will have to do.
I pre-washed and dyed it using Jacquard Lumiere in Super Sparkle to get it as white as possible.
Below, you see my basting line to guide stitching Judith M's 7/8" petersham (in white) onto the silk. I will space each ribbon across the fabric 1/4" apart.




With this process, I am re-creating an effect I enjoyed in an original 1930's net evening gown per my Sept. 2010 post, which you can see Here . I will do so by cutting a similar gown on the bias of my ribbon fabric for the chevron effect-so essential in the 1930's streamline dynamic!
Here is the original 1939 inspiration:



Here is the pattern I am modifying for a sleeveless version of the ribbon frock:

5.9.11 Update
I have completed the ribbon on one yard of the organza cut:

It has a wonderful transparent quality!

6.14.11 Update
First (bodice back) is cut and darts are stitched. This is just the beginning of the labor-intensive stitching process!

6.21.11 Update
Photo shows the process of cutting the bodice front. The pattern calls for self-facing with a fold at center front, but I am cutting along that fold line with a 1/4" seam allowance so I can stitch a strip of ribbon with a like seam allowance of organza so the transparency between the strips of ribbon is not compromised:


Using bodice right front to cut the left front for perfect symmetry!
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Shows the ribbon facing stitched in place before turning:

Ribbon facing un-folded:

Shows the alignment of ribbons at the shoulder seam and 'band' effect of center front ribbon forming the collar in one with the bodice front.
I have yet to determine how to press these seams to maximize transparency.
The armseye bias will be white silk organza to maintain transparency.

Bodice front (before gathering). I stitched the ribbon onto the organza with white silk thread for a nicer finish on the bodice pieces as they are more readily viewed up close:
