An Illusion ?

After finding an interesting book of paintings at a book store, I checked about the artist.
I found another interesting illusion video. So I'll show it to you.

Which direction is she turning ?

First, you can only see her turning clockwise, but you can actually see her turning counterclockwise too. If you can't see her turning counterclockwise, look at the counterclockwise shade of her legs, or fast-forward and rewind the video several times, then you can see it.




Please don't watch just her bust, but also her legs !