In style正流行的；时髦的

My clothes are out of style.

我的衣服都过时了。

You clothes are in style.

你的衣服很时髦。

A:I'm going to buy a lot of clothes during this year's shopping spree.

我打算在今年的购物狂欢节买很多衣服。

B:Why?

为什么？

A:Because many of my clothes are out of style.

因为我的很多衣服都过时了。

背景音乐：Summertimes of our lives