up-to-date，modern，trendy；

[例句] 我以前常穿新潮的衣服，但看上去却滑稽可笑。 I used to wear trendy gear but it just looked ridiculous.

[例句] 从几乎所有意义上说，他们都属于非常新潮的保守主义分子。 They were very modern Tories in almost every sense.