overdress

verb (used with or without object), o·ver·dressed, o·ver·dress·ing.

1. to dress with too much display, finery, or formality: He certainly overdressed for the occasion.
2. to put excessive clothing on: She tends to overdress her children.

noun

3. a dress worn over another, which it covers either partially or completely.

verb (ˌəʊvəˈdrɛs)

1. to dress (oneself or another) too elaborately or finely

noun (ˈəʊvəˌdrɛs)

2. a dress that may be worn over a jumper, blouse, etc