They're are 2 ways to take naked photos.
One way you spread your leg far apart and start to touch yourself inappropriately. Much like in porn.
The other way could vary much more, but give a sense tease or natural state.
We all should remember Gaga did Burlesque for a while and obviously it made an impression on how she does her performance.
Personally i think she feel no boundaries to the way she expresses herself and will take risks just like any other true artist.
PS-
I posted some photos from the Japanese vogue a while back that were very nude.
http://www.gaiaonline.com/guilds/viewtopic.php?t=18148145