The Collaborative International Dictionary of English v.0.48:
Dressy \Dress"y\, a. Showy in dress; attentive to dress. [1913 Webster] A dressy flaunting maidservant. --T. Hook. [1913 Webster] A neat, dressy gentleman in black. --W. Irving. [1913 Webster]WordNet (r) 3.0 (2006):
dressy adj 1: in fancy clothing