I’m feeling a little underdressed because I see everyone else is wearing a suit and tie, and I’m in jeans.

我感觉我穿得有点过于随意了，因为我看到其他人都穿着西装，而我却穿着牛仔裤。

Don't you think you're a little underdressed for a wedding?

你不觉得对于婚礼来说你穿的不够正式吗？

You look underdressed without a tie.

你没打领带看起来不太正式。

It is always better to be slightly underdressed.

更好的装扮总是会有点不太得体。

It is always better to be slightly underdressed.

有一点点不得体才是最好的。

It is always better to be slightly underdressed.

它总是更好的是有点不得体。

Without a dress handkerchief, I felt underdressed.

我没有礼服手帕，自觉寒碜。