These clips are from the B-movie "Naked Fear", from 2007. It's a really bad, bad, bad movie, with stupid dialogs, cliché scripts, horrible acting, etc. the only thing worthwhile is a 20-minutes strech of nudity with actress Danielle Deluca.
Basically, she's a stripper that is drugged and kidnapped by a maniac who takes her to the mountains and leave her completely naked and then starts hunting her (i kid you not!). In the first clip, there's a good bit of ENF, but being naked is soon the least of her worries when she's hunted by the crazy kidnapper. In the second and third clip, we see her running around, trying to escape and survive. In the last one, to her relief, she finally finds some clothes (damn!).
so yeah... awful movie but great nudity.