The seasonal change of clothing; switching garments according to the season (often done at schools or workplaces).
学校は四月に衣替えを行い、夏服に切り替える。
The school has a seasonal change of clothing in April and switches to summer uniforms.
会社の規則で十月は制服の衣替えの時期だ。
According to company rules, October is the time for the uniform seasonal change.
暑くなったのでコートをしまって衣替えをした。
It got hot, so I put away my coat and changed my wardrobe for the season.
A makeover or redesign; giving something a fresh look (e.g., redecorating a room or redesigning a website).
この春、店舗の衣替えをして内装をモダンにした。
This spring the store had a makeover and its interior was made modern.
会社のコーポレートサイトを衣替えして使いやすくした。
We revamped the company's corporate website to make it easier to use.