Same pics (and many more of this lovely woman) have been used by an escort advertising in Orange County California, with postings yesterday and today and one as early as August 18th. Found this via Google Image Search. No hits on tineye. That alone is not necessarily proof one way or the other since Katarina claims to be from Toronto and I suppose that it's conceivable that her images have been "borrowed" by the advertiser in Orange County. But, I'm very skeptical that these are images of either advertiser.
If you're daring enough to check her out anyway, please let us know if she is in fact the lady in the pictures or if she looks at all similar. If you want to see more pictures of the woman from the ads, check the "escortphonesearch" link from the google image search results. I hesitate to post the link here since we can't be sure if it's the advertiser or not and I don't want to violate perb posting guidelines.