One its semi unethical... Using others work to fuel your own. And two youre making an interpretation of an interpretation.
So say your an Art student and you were tasked to make a copy of a painting. Instead of using an original you copied a painting someone else in the class painted of the original. How far off from the original would you think yours would end up being? Pretty close? Probably less close then the copy you copied. Open the gallery and use the reference photos of the actual suit...or buy someones work instead of using their work to influence your own.