There's definetely a hair piece or something there.... look at the sides how they are different from the top. if you look closely, you can see the color differences from the top of his head to the sides, the sides are more gray and much less thick compared to the top, the color is obviously different.
the second pic, the sides are obviously a very different color from the top.
the third pic, you can see the gray color differences.
he ALWAYS parts his hair to the side.. ALWAYS. different from back in the day (he no longer has the "v" in the middle of his forehead, what happened to it??:
he has more recession here:
and
the ER picture, people say he shaved it to look like that (i DK if it is true, it looks slightly like it though, but there would still be recession regardless), however, the first one is clearly his natural hairline, there is nothing shaven there.
yet he magically went from the two above, to this: