Answer: preening

AnswerCrossword Clue
PREENINGShowing vanity in (oneself).
PREENINGActivity of a belle or bird
PREENINGPrimping
PREENINGGetting dolled up
PREENINGGetting ready for the prom, perhaps
PREENINGShowing off
preeningCongratulate or pride oneself
preening(of a person) Devote effort to making oneself look attractive and then admire one's appearance
preening(of a bird) Straighten and clean its feathers with its beak
preeningPREEN, to clean and arrange the feathers with the beak