The Collaborative International Dictionary of English v.0.48:

Sartorial \Sar*to"ri*al\, a. [See Sartorius.]
   1. Of or pertaining to a tailor or his work.
      [1913 Webster]

            Our legs skulked under the table as free from
            sartorial impertinences as those of the noblest
            savages.                              --Lowell.
      [1913 Webster]

   2. (Anat.) Of or pertaining to the sartorius muscle.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sartorial
    adj 1: of or relating to the sartorius muscle
    2: of or relating to a tailor or to tailoring