I'm guessing you want this cat suit for a Cy girl? To be honest I don't know anyone that sells or offers Cy girl patterns. As AP said the Hobby Japan Mook, Action Girls, Does have a pattern in it of a basic bodysuit.
There are seamstress and customizers around that offer some very good bodysuits. Plus sometime next month ZC girls will have their new Cat out that is a lot like Cat woman. You may want to wait and see if any of the retailers decide to sell any of her gear loose.
I hope that's of some help,
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