How is the Louis Vuitton Madonna campaign edited?

http://www4.pictures.zimbio.com/fp/Madonna+Louis+Vuitton+Campaign+Handout+Photo+AyCzcEzooj5l.jpg



i found out the effect is called solarization, but i don't know how to do it so it's just in parts of the photo instead of inverting the entire picture? i have photoshop cs4.



its also in these two photos:

http://www.flickr.com/photos/thediaryof_idan/3814992316/

http://www.flickr.com/photos/larajade/3816339150/



and partly in this even:

http://www.flickr.com/photos/larajade/4503659525/



i've tried asking the photographers how it's done but received no reply.

thank you :)
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It's called solarisation. I'm sure there are lots of tutorials on the web. Also shots like that need a lot of cleverly placed lighting - not that expensive to do, go to any hardware store and pick up some work lights...



Obviously the colours have been messed with as well, contrast and curves.