Two-Tone Lady Lux Sheer Mesh Top

I own several of the original lady lux tops which run small as it is but I found this version even smaller and less stretchy in the arms. I am typically a size small in most tops and can fit into both a medium and a large in the original lady lux but prefer the large as it is more comfortable and worry less about potentially ripping it because it is delicate. In this two tone version of the lady lux I bought both a medium and a large and could not even get my forearms through the sleeves--they were so tight and had no stretch. Large was comfortable without being loose. I'm 5'8" 140lbs, 36C for reference.