When I saw the editorial in 2011 I had no doubt that Sigrid was wearing a wig for the photo shoot, since she had a beautiful long hair several months after. Now that I have seen the video of its making I am totally puzzled -- The hair looks too real for a wig. Did they really cut her hair off? Is it just a recent breakthrough in the wig making? Does anyone know?
I am answering my own question! I watched the video many times and think her hair's a wig. that looked incredibly realistic though.