Some have suggested that her publicist leaked the photos regularly for continued exposure.
These leaked photos do similar to the 2009 set so maybe there is some truth to that.
Crazy America, respect from Europe the land of the free! A mirror self-shot with boobs, angles and facial expression! The official word from Hudgens is the usual someone-else-did-it defense: a vindictive horny hacker got hold of her personal pictures and released them on the internet.