I have the impression that using After Effects Overlay-Mode with some recorded flary-stuff might yield the same results. If it's not happening in front of the lens, it's not a real flare but basically post-production ;))
It's easily one of the best books I've ever read. When I had some time (some time ago) I did a transcript of a whole book as a mindmap - just to get a bit closer to it ;) Time to read it again!
And the actress can barely move anywhere ... not a very flexible setup.
Where are the blacks in this trailer?
How much does it cost to get a ad-blog post like this?