http://md-007.net/costume.html
This is probably your only option, only one I can think of anyway, but they don't have a specific race queen outfit, though the KPOP 2 one seems to resemble race queen a bit.
I personally consider cosplay at soaplands to be a bit of a waste, you usually both take your clothes off within 5 minutes anyway, but I've always been more of a underwear guy than cosplay.