My father had an awesome collection of Playboy magazines and one of my favourite issues had this feature on lace-top stay-up and suspender stockings. All modelled with suitable high heels, which probably explains why this was one of my most favourite issues.
The writing that went with the pictures made the point that the lace top on lace-top stockings is meant to be seen. When she wears lace-top stockings out she is hoping that a man, or men, will get to see the lace top.
Seeing this picture, which is one that Christine found, brought back memories of this feature in Playboy.