After looking closer, the header is two 2x6's. As far as it being load bearing or not, it's hard to tell. The wall separates two different height ceilings. The attic BR is directly on top of the downstairs BR, which is what this doorway leads to. When the attic room was added, the ceiling above the downstairs BR was dropped about 2 feet to make more room upstairs. So, the ceiling on one side of the wall in question is 8.5 ft., and on the other side of the wall (hallway), the ceiling is about 11 ft. The king studs in this doorway go up to the top plate, which I obviously can't see past. The top plate is at the 8.5 ft ceiling, but the wall obviously goes up to 11 feet. There is a ledge in the upstairs room above the hallway. I hope that description makes some sense. If so, does it shed any light on whether the wall is load bearing or not?