For the record, I spent several hours finding the cleanest bluray copy I could find and determined it was an artifact. But I didn't let on.
This however, is not a glitch (posted before, perhaps) 
"01 Jan 1995 --- THE ACTRESS LAURA SAN GIACOMO"
As for your first point, thanks, doc! You proved a true practitioner of the doctor's creed ("First, do no harm..."). Like I told Palomine, every time some little old lady sees the face of the virgin Mary in a taco shell you don't have to call in the lab techies to prove her wrong! My belief that I will someday see LSG's unfettered boob and nipple is unshaken!
Second point: Thanks again, and Wow! I believe I've seen that glamour photo before, but hadn't really looked closely. The gauzy material of the top of her dress is pretty teasing/revealing. I found another shot from the same session where the curvature and cleavage between tits is neatly defined; her right arm seems to be pressuring nicely towards the left. Now if only the photographer had moved the action a little further south! And remember, these were taken in '95, several years before Laura had her mid-life growth spurt (due to a miscarriage, or whatever), so this is just a hint of what was to come.