Zero Vicky at frame 1, pose her at frame 15--------Select the hip of the Dress/skirt and enter the cloth room, create a new simulation, hit "Clothify" you have the hip selected so hit OK, now click "Collide against" and choose the abomen. hip, buttocks and thighs of vicky, click ok and then hit the "Calculate simulation" button a few minutes later you should have the desired result......Steve

PS Zero Vicky at your fav frame then export the hip part of the dress and you'll have a morph target for later..