What should I wear? 我该穿什么呢？

Don't bother to dress up-come as you are. 不用穿讲究的衣服——就穿平常的衣服来吧。

What are you planning on wearing to the party? 你准备穿什么衣服去参加这次宴会？

I like everyday clothes. Say, how about sports suits? 我喜欢便装，你看运动服怎么样？

Good idea! How about the insides? 好极了 ！里边穿什么呢？

I think T-shirts are better than any other shirts. 我觉得T恤比衬衫好。

I agree. I always feel uneasy¹ in shirts. 我同意，我觉得穿衬衫怪不自在的。