This isn't a porn star, but as far as "girls who take some clothes off on the internet" I have to say Lindsey Marshal is the cutest I have seen.
www.lindseymarshal.ca
<img src="http://www.lindseymarshal.ca/tgp/albums/Bath/bath73.jpg">
(hope the html works, also sorry for just a face shot, but you guys can find more on your own)