You can add fur to any of the following:

For more information about enhanced layer blend mode, refer to Element Layer Ordering.

The following image shows fur applied to artwork and an edge assignable trim.

Fur is a property that you can apply to a material. Then, using V-Ray, you can preview the fur on your garment. For more information about V-Ray, refer to V-Ray Real-Time Ray Trace Rendering.

To add fur:

You can also view the fur displaying accurately in a rendered image or turntable output, if you use V-Ray as the render engine. For more information, refer to Rendering in VStitcher.