Another comparison.
Change is evident. Not revolutionary, but enough and in (some of)the right places. He was thicker in the torso/lats. As said, in the delts and traps. And, evidently thighs. And, also evidently in his waist and nipples. Luckily for Ronnie, he had such a tiny waist/hips in 1997 that some added thickness did not destroy his aesthetics.
I disagree with ND that the 97 version of Ronnie was 255. His torso was tiny compared to later (not that it matter)