In all of my Furrette renders to date, I've used the standard Poser 4 "plastic" hairstyles (which look surprisingly good on cartoon characters), along with Kozaburo's transmapped Kyoko hair, Alice hair, and PonyTail (available at Digital Babes.

Some rescaling and repositioning of the hair props is necessary, but it doesn't usually take much effort. You should be able to use almost any hairstyle with Furrette, with a little work.