Her name is Stormy Daniels and she's sort of, kind of denying everything these days.
Though if he did have "textbook generic sex" with her, then why not just front it up? It wouldn't exactly be the worst thing he's ever been accused of, would it? I dare say a fair few people might even be reasonably impressed!
Here's the interview.
And here's some pics of Stormy wearing way less clothes...
He's allegedly done alright there, hasn't he?