seasonal change of clothing; changing one's dress for the season
renovation; facelift; redesign; redecoration; new appearance; fresh look
「更衣」 has other readings with different meanings.
六月に衣替えをする。
To change seasonal clothes in June.
もうすぐ衣替えの季節だ。
It's almost time to change clothes.
クローゼットの衣替えをした。
I changed the seasonal clothes in the closet.