Source : Webster's Revised Unabridged Dictionary (1913)

Dandify \Dan"di*fy\, v. t. [imp. & p. p. {Dandified}; p. pr. &
   vb. n. {Dandifying}.] [Dandy + -fy.]
   To cause to resemble a dandy; to make dandyish.

Source : WordNet®

dandify
     v : dress like a dandy
     [also: {dandified}]