Hmm - I am not sure - while it could be Sylvia Bayo, I don't think that it is.
While Sylvia had amazing breasts and huge nipples I don't think that she was quite as big as the girl posted by LDW although it is hard to be sure.
Another consideration is simply the quality of the image - all of the images of Sylvia that I have ever seen are scans of magazine images from 30 years ago and it shows - that picture just looks much newer.
Anyway, for comparison, here is a shot of Sylvia ...
r2d2, I hate digging for evidence that may prove me wrong about the Claudia/Sylvia Bayo shot that LDW posted, but here is Virginia Jones, a much more recent model.
Mind sharing your thoughts?