Indeed. The biggest problem with these laws is when the 14 year old dumbass takes a picture of her own boobs and then gets busted for having child porn on her computer. It doesn't happen a lot, but it does happen. I'd rather not Google for a link (for obvious reasons), but feel free if you're curious.
To be fair, the same thing occurs with underage men.
There was a case not too long ago about a predator who got pics of underage teenage boys, contacted them and threatened to leak the pics, and got them to masturbate etc. for him on webcam, and was allegedly blackmailing dozens of teenage boys in this manner.