Due to the number of possibilities, it is quite difficult to get them right.
But?
The fastest way around this is to use a magnet or 2 on the skirt.

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"!