From Page 37 of Denson's "interview" with Bishop in December 2017:
Bishop: What I remember about the basement was different.
Denson: Oh?
Bishop: Uh-huh. You had had an operation, a breast enhancement.
Denson: No (laughs). No. I had no boobs at 21 years old.
Bishop: Well, you'd talked about it because you had no boobs at 21. I thought you'd had a new...
Denson: Why would I have, why would we talk about having a boob job at 21 and you thinking I'd had a boob job when I had no breasts whatsoever?
Bishop: I, yeah.
So, did Denson change her story at some point in time to make it jibe with Bishop's memories? I'd say, based on Denson's remarks in December 2017, that if Bishop asked some sister missionary in the MTC to show him her breasts, it certainly wasn't Denson.
On the other hand, of course, it's been conclusively determined that Denson has no credibility, whereas Bishop's memory is impeccable and he couldn't possibly, in his old age, be conflating old events or even remembering things that never happened. (The church sprang for a sister missionary's boob job? From fast offerings, no doubt.) So if Bishop said all this to the BYU/Provo police, it's obviously true and proves absolutely that the church is false.