So I was on the lookout for someone in DC this week and ran across Katie's ad. Very cute girl - if it were her.

Eros ad - http://www.eros-dc.com/files/190418.htm
No TER reviews, google search showed a couple of BP ads. - http://tinyurl.com/43cy64g
I used tineye.com on all of her pics, no hits, but the last one did have 2 hits.
Followed one of those links to: http://tinyurl.com/3jrurqa
Looks like this is really a model named Isabella Spice. It could be possible that Isabella Spice is a latina TS model and is providing UTR as Katie, but somehow, I don't believe it.