Thanks, Kathi.

After I posted the question, I got to thinking that perhaps Christine is just built bigger. If she's taller (how tall is she?), and has broader shoulders, then that makes a lot of sense.
Part of your answer fuels another question:
You said that you have 850cc implants. I had it figured out that 650cc would be perfect for myself, giving me the "stacked, but could be natural size" appearance (I'm 5'3", 135 pounds at 8%bf). ANY implants are going to be blatanly obvious on me when nude, I have to resign myself to that.
Of course, every body is different, hence the guys going ga-ga in another post when I said that I had it figured that when I was done, I'd measure about 50 inches or so flexed (my chest measures 44 inches with lats and pecs flexed). Looking at your post with the tape, maybe I did my figuring incorrectly...