I was playing around with grayscale of this just a hour ago myself.
Unfortunately I don't have any apps to fine tune the rotation, so I'll just piggyback on yours for now
A couple things that don't help this render come across (other than the coloring) are the level of shine and highlights in the hair which makes it look like highly polished metal or ultra glossy plastic.
Another thing is that, unlike most other celebrities, people's image of her has been fostered by artist's idealized illustrations of her as much as, or more than, actual photos and film.
That includes Olivia's own voluminous 2D contributions.