How do we know that it ISN"T Jesus? Anyone who says s/he knows what Jesus looked like is ....
There was/is a journal called, I believe, Image. It must have been around ten years ago that they published an article that described and showed examples of the various conceptions (I don't think even one was "immaculate") of the appearance of Himself. I wish I could find it and scan some of the images. There is a painter somewhere in the US (maybe Missouri or one of the nearby states) who has updated Jesus. He looked very innocent and sort of out of place in a greenish suit. I think he was clean shaven. This was to be taken seriously. It is not an iconoclastic publication, if my perception/recollection is correct.
It is funny how these things gain authority over the years. Lots of people think they know what he looked like. Weird, if you ask me.