Can't seem to find all dozens of sites this photo was placed on to get the best pixilation but maybe someone can find a better one. Question, why are her elbows cut off?
the most obvious possible reason is that there was a third person present and was whose image captured in the photo, and the photo was cropped to show only two people.
or if you are referring to the vertical, then maybe the other person was carrying a jacket in his or her lap.