The Collaborative International Dictionary of English v.0.48:

Primp \Primp\, v. i. & t. [Cf. Prim, a.]
   To be formal or affected in dress or manners; -- often with
   up. [Prov. Eng. & Scot.] --Halliwell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

primp
    v 1: dress or groom with elaborate care; "She likes to dress
         when going to the opera" [syn: preen, primp, plume,
         dress]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "primp":
   adorn, array, beautify, bedeck, bedizen, blazon, color, dandify,
   deck, deck out, decorate, dizen, doll up, dress, dress up,
   embellish, emblazon, embroider, enrich, fancy up, fig out, fix up,
   furbish, garnish, get up, grace, groom, gussy up, ornament,
   overdress, paint, plume, prank, prank up, preen, prettify,
   pretty up, primp up, prink, prink up, rag out, redecorate, redo,
   refurbish, set off, set out, slick, slick up, smarten, smarten up,
   spiff, spruce up, titivate, trick out, trick up, trim