Old-Time Swimwear

I’m looking for a pattern for an early 1900s style swimsuit (to be worn as a Halloween costume). I’ve been searching for months and can’t find anything suitable. Does anyone have ideas about how to go about designing something like this, or adapting something from an existing pattern?

You are so right-- why didn’t I think of that!?

I found this site:

I also found this site…they’re not knitted, but it shows what the bathing suits of the 1900s looked like.

wow…that looks more like a dress!