参加婚礼时，他穿着T恤和牛仔裤感觉格格不入。

He felt ___underdressed for the wedding in his T-shirt and jeans.

在正式晚宴上，她只穿了牛仔裤和T恤，显得有点衣着不当。

At the formal dinner, she was clearly ___underdressed in just jeans and a T-shirt.