I would just look for a good free fall hair.

Then depending on the Poser version, use magnets, or the morph brush, to push the mesh into a Ponytail.
The band around the ponytail hair can easily be made from a prop.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!