Power Girl Gets a Breast Reduction
I did some Photoshop work, overlaying one cover on the other, and as it turned out, Greg's suspicions were right. To the tune of a couple of cup sizes, in fact:
At the time of the solicitation, Meltzer reported that PG had already been toned down from the original Turner artwork. So either he got his covers confused, or this particular drawing of Kara got revised twice.