Rebuttal!
This doesn't work as an analogue, because snake-lady's . . . thing covers her entire breasts, and her breasts only, while Star Stapphire's shirt attaches to sleeves and only covers part of her breasts. See, when snake-lady moves her arms, the glorified pasties aren't affected and don't move and have more grab because they go around the curve of her breast, but when Star Sapphire moves her arms, the material will tug at the material on her breasts, and because the material doesn't cover the curve, it'll move a little to the outside of the breast each time (unless she's got it superglued on or something, in which case it'd just be painful).