Took second look at the first image. If you look at his arms and not his face, there might be enough muscle there to make "18 years old" almost believable. But looking at the whole picture, it is that of a boy, not a man.
If this were an american boy, at least one could discuss the fact that he would be part of the "uncut" generation that has recently started in the USA. But since he is from europe, there is nothing to discuss because foreksins are standard in europe.