overdecoration

/ˌoʊvərˌdɛkəˈreɪʃən/
noun
  1. The act or result of adding too much decoration; excessive ornamentation.
    • The designer warned against overdecoration, which can make a room feel chaotic.
    • Some people prefer minimalism to avoid the problem of overdecoration.
    • Overdecoration of the cake made it look messy instead of elegant.