Can you open the image preview for Image_Map_2? So we can see what level of transparency it's applying? I assume the transparency map is to get rid of the collar of the tunic and give the V cut neck. If the "white" or opaque areas of that texture are not 100% white, then you will have a level of transparency there. Your options to deal with this are either to edit the texture and increase the brightness/contrast so the whites become true white and the blacks true black, or you can do a similar thing with a Gain math node with the texture plugged into Value_1, set to 1.0 and Value_2 set to something between 0.5 and 1.0 to boost the contrast.

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