Oh man it's been a while... forgot the exact year, I think it was back in the early/mid 1990's.. well before the dreaded 2YK lol I was part of poultry emailing list, every member got emails from everybody who was a member of this group. Bunch of us got real friendly and chatty on Dom_Bird, several members got kicked out for being too chatty and so Bird_Farm got established... it was even chattier and so much fun. I was already a NN advocate back then and tried to encourage people to try out NN.. as part of a in-group joke thing, I mentioned NN silkies- Las Vegas Showgirls! and few other members just loved that idea.. it took off from there with several 'main' players starting their lines and spreading the birds or the idea around.
NN silkies have been created few times through the years previous to us but afaik they never took off and the Showgirl name and the current interest can be traced directly to the Bird-Farm group with me being the name originator.
Good times!
p.s. I created a showgirl line using show silkies and bred for many years, with some also laying green eggs. Unfortunately I was forced to reduce the flock and had to make the hard decision to sell and give away all of the silkies and showgirls....