It looks like she stands with her legs pressed very close together so that there's not really a chance for the material to form a pant leg. Towards her ankles i

It looks like she stands with her legs pressed very close together so that there's not really a chance for the material to form a pant leg. Towards her ankles it looks like pants do start to form but are cleaned up by assistants: https://www.youtube.com/watch?v=Jz_ltPAzuJI https://www.youtube.com/watch?v=Jz_ltPAzuJI I imagine you are correct that there were a few steps/techniques not shown in the video.