You know, to be perfectly honest, if you change her hairstyle to a shorter bob like do similar to her regular hairstyle on the show, dye it (the hair), her skin, and the entire outfit she's wearing blue (while eliminating the gloves in the process revealing her bare hands for the eye/world to see), she can almost if not completely pass off as the original Crystal Frost version of Killer Frost. It's THAT much of deadringer.