There are some nice looking shaders here:

http://www.renderosity.com/mod/freestuff/index.php?username=4blueyes

Look for "16 Glossy Silk Materials for P5 - Repost" towards the bottom of the page.

and possibly some here:

http://www.renderosity.com/mod/freestuff/index.php?username=tabala

look for "Tabala's-Fabrics P5/P6" also at the bottom of the page.

Is this the sort of thing you're looking for?

<-insert words of wisdom here->