Sheer Amusement
Once upon a time it was considered totally apropos to wear sheer pantyhose with sandals. Here is the evidence: vintage 80s Holeproof Sheer Tops with sheer toes. Clearly, however, the original owner of this pair spotted in a thrift store thought better of donning them.
I have kicked about this sartorial dilemma previously: what kind of foot covering ought to be worn with open-toed shoes? Obvious socks and hosiery seem to work better because they become part and parcel of an entire look, whereas sheer hosiery pretending to be naked skin just looks wrong, with or without the seam in the toe. With so many other options (other types of tights, or, at a pinch, a closed shoe) its unseemly not to toe the line.