It's also a matter of how you draw it and whether or not you slowly make the change. Just compare Dale Eaglesham and Amanda Conner's Power Girl. Both published in the same year, both have large breasts, a keyhole, and short hair. Eaglesham's has a more realistically sized bust with a smaller, higher placed keyhole, and a blowout bob cut while Conners has massive tits, a large, lower keyhole, and hair down between her jawline and neck. Both have the exact same design sensibilities and are immediately recognizable as Peej, but look completely different.