Tons of apparel templates. T-Shirts, hoodies, polos, women's shirts, etc. Just add your own design to mock up a shirt. Or, download the "Shirt Design" files and use those. I've collected these from several different places. They'r every useful and will save you lots of time.

[URL=http://www.filesonic.com/file/2363264854/ShirtTemplates.zip]http://www.filesonic.com/file/2363264854/ShirtTemplates.zip[/URL]