WordNet (r) 3.0 (2006):

soigne
    adj 1: polished and well-groomed; showing sophisticated elegance
           [syn: soigne, soignee]

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "soigne":
   a la mode, braw, chic, classy, clothes-conscious, cosmopolitan,
   dapper, dashing, dressed to advantage, dressed to kill, dressed up,
   elegant, en grande tenue, endimanche, exquisite, genteel,
   gussied up, in full dress, in full feather, in high feather,
   in tails, in the mode, jaunty, modish, natty, neat, nifty, nobby,
   posh, recherche, ritzy, sharp, sleek, slicked up, smart, smug,
   snazzy, soignee, sophisticated, spiffy, spruce, style-conscious,
   stylish, swank, swanky, swell, tricksy, trig, trim, vogue, voguish,
   well turned-out, well-dressed, well-groomed