"dress up" in Chinese (Simplified)
打扮盛装打扮
Definition
穿上特别或漂亮的衣服，通常是为正式场合或玩乐（如穿上服装）而打扮。
Usage Notes (Chinese (Simplified))
口语用法，可以表示穿正式服装，也可以指穿上特定服装（如角色扮演）。常用于“dress up as”（装扮成）或“dress up for”（为...打扮）。与单纯的“dress”不同。
Examples
We have to dress up for the wedding.
我们必须为婚礼**打扮**一下。
The children like to dress up as superheroes.
孩子们喜欢**打扮**成超级英雄。
My mom told me to dress up for the party.
我妈妈让我为聚会**打扮**一下。
He doesn't like to dress up unless it's really important.
他除非真的很重要才会**盛装打扮**。
It's fun to dress up for Halloween every year.
每年万圣节**打扮**都很有趣。
You don't need to dress up; it's just a casual dinner.
你不需要**打扮**，这只是个随便的晚餐。