Lori's podcast blog - Sew Forth Now. More specifically, the Episode 71 where she interviews Lynne.
In the links from that episode, Lori lists a link for ruffled fabric from - get this - Ruffle Fabric dot com. As well as a tutorial for making your own ruffle skirt. Of course I was smitten - and it didn't hurt that Carolyn made a ruffle skirt (scroll down).
Ruffle Fabric was lovely to deal with and a joy. I will order from them again.