穿搭外套英语表达可以用 "pairing a jacket" 来表示。例句：

I'm not sure what to wear today. Maybe I'll try pairing a jacket with my jeans.

你也可以用 "wearing a jacket" 来表达，例如：

It's a bit chilly outside, so I'm wearing a jacket to keep warm.

或者，你也可以使用其他类似的表达，例如 "putting on a jacket" 或 "donning a jacket"。