The new trend was also a great example of planned obsolescence, that is, to design a product so that it will soon become unfashionable or impossible to use and will need replacing.
2
穿裘皮服装已经变得不流行了。
Wearing fur has become unfashionable.
《柯林斯英汉双解大词典》
3
展示人物在艺术界里并不流行。
Representations of people weren't fashionable in the art world.