There were some differences for how she was portrayed during her MLF days -- i.e., the red costume vs. the yellow version.
But it seemed like there was a more subtle variation in how her costume itself was portrayed. That image above showed that it was a full body suit initially, but then somehow morphed into being bare legs / upper body.
Was it just artist creative license, or just bad ink / coloring from the '90s making it look like skin?