"Fashion" is a poem from Clark Ashton Smith (CAS) that went unpublished in his lifetime. The text is not available on The Eldritch Dark, so here's the complete poem:
Though my love display her limits,
Though the longer dresses hide her
Knees from my enraptured gaze--
I will never check nor chide her:
Though she wear them short and shorter
There is always more to show;
And the dress that drapes her shoe tops,
Leaves a vaster lot to know.
There's not much to say about this one - certainly a minor item from CAS' poetic corpus, and no great surprise that he chose not to publish this one.