Prink

from Dictionary.com:

prink \PRINGK\, transitive verb:
To dress up; to deck for show.

intransitive verb:
To dress or arrange oneself for show; to primp.

Prink is probably an alteration of prank, from Middle English pranken, "to show off," perhaps from Middle Dutch pronken, "to adorn oneself," and from Middle Low German prunken (from prank, "display").