I went to Joann Fabrics trying to find a decent ninja costume pattern, but could only find some pansy little boy's ninja costume pattern. So, frustrated and feeling a bit lazy, I did a search for ninja costumes and came across this site. Just thought I'd put a word out for anyone else interested in cosplaying, but who lack the sewing skills. Also, the shipping is $2.95 for all orders. Here's the link:
http://www.karatedepot.com/ninjauniform.html
http://www.karatedepot.com/ninjauniform.html