如果你想表达某个人改变了外观，你可以使用以下表达方式：

"The person underwent a makeover."
这个人进行了整容。

"The person changed their appearance."
这个人改变了外观。

"The person transformed their look."
这个人改变了他们的外貌。

这些表达方式的来源都是英文中常用的表达方式。下面是一些例句：

"She decided to get a new haircut and dye her hair blonde, so she underwent a makeover."
她决定剪一个新发型并染成金色，所以她进行了整容。

"He changed his appearance by growing a beard and getting a tattoo."
他通过留胡子和纹身改变了他的外观。

"She transformed her look by wearing more stypsh clothes and applying more makeup."
她通过穿更时尚的衣服和化更多的妆来改变她的外貌。