Peter....try the Dance Links at www.dancer.com. Click on the "dance links" then click on "Miscellaneous Dance Resources."
I bought mine from Taffey's, who don't sell through catalogues anymore. About 15-years ago they were about $80.00. Also, try Leo's in Chicago at 1900 N. Narragansett St. (312)745-5600 (their factory store) -- Ask if they can make them. They may be expensive.
Another place to try is www.renaisancedancewear.com. If they don't have them, as a major costumer, they'll know where you can get them.
Let me know if you have any success! Good luck! balletboy[/i]