AtD translation: imputations of the unfashionable

[Mike Jing]

P 345.22-28  They went uptown to look for ball dresses. Katie knew a
seamstress who worked in a sub-basement of the I. J. & K. Smokefoot
department store and had a line on returned or just-out-of-fashion numbers
which could be picked up for a song. Smokefoot’s was located along the
Ladies’ Mile, far enough north to avoid imputations of the unfashionable,
yet not so far from others of its kind as to present inconvenience to any
female client determined to shop the day through.

What does "imputations of the unfashionable" mean here?