What should I wear?
Which dress should I wear?
Which one should I wear?
What should I put on? 穿红的吧!
The red one. 快换衣服。
Hurry up and get dressed. 你毛衣穿反了。
You're wearing your sweater inside out.
You have your sweater on inside out. 上下颠倒了。
It's upside down.