Full name: Jana Kucova
Multiple years ago, when she looked natural, she did a video which you can still find on tube sites. I can't post a link because it's not allowed. Look for "Big Tit Girl Uses Her Tits as a Pussy." There's a 30-minute version. If you're a fan of this girl, the video is great.
You can also search certain tube sites for "Jana Kucova" and get another video. It's shorter, and horribly shot. But yeah, it's her.
Also:
http://www.lanasbigboobs.com/models/j/jana_kucova/
And this link too, although the pic of her is nasty:
http://www.boobpedia.com/boobs/Jana_Kucova