他穿着牛仔裤参加婚礼，感觉有点太随便了。

He felt ___under-dressed at the wedding in just jeans.

她在冬季婚礼上只穿了一件轻薄的连衣裙，感觉穿着不够得体。

She felt ___under-dressed at the winter wedding in just a light dress.