I normally where 2X. The 5X Tall is barely long enough it makes a night shirt. The tall is right on the edge.

Most 5X and 6X are to short for this. Some are even to short if you need the size always leaving a bare gap.  I suspect most people know the joke about the larger person that has a crack problem.  When they are bending over the view from the backside is very ____. I suspect the normal lenght would have these symptoms.