Substituting something for wool

Hello, I want to knit the pattern below, however, I do not want to use wool. What would you suggest I use in its place??

Thanks for any help.

D.

http://www.straw.com/crystalpalaceyarns/patterns/regpatts3/tutLame-FlouncySkrt.html

Just choose something the same gauge. It looks like bulky, but there seems to be different yarns.