Looks like Terry simply used the non-plus size picture for the plus size item. Maybe it was to save money or just out of sheer laziness?

I agree with all the responses here. Even though there is no guarantee that the short/item will fit your body the same as it does the model's, a picture can give you a general impression of how the item will look. Terry should spring for a plus size model if it wants to market to plus size consumers.