What is the modern day equivalent of a "dandy?"

The Japanese still use this word to describe how a person dresses. However I'm sure that their idea of dandy is different from what I saw in Wikipedia, which shows pictures of men from hundreds of years ago.

I tried to ask this question on the Japanese stackexchange board, but it didn't quite answer my question.

What is the modern-day English equivalent of a "dandy?"

I don't know what your usage in Japanese is, but the meaning of dandy is simply "someone who is particular about his dress and appearance". It's not required that a dandy dress in 18th century costume.

so a modern-day word for dandy is

dandy

A more modern word would be metrosexual

a heterosexual man who spends a lot of time and money on his appearance and likes to shop

For some more underused and fancy words, there is the thesaurus from which I find

dude, fop, gallant, sheik, beau, swell, fashion plate, clotheshorse

hipster , if you meant slavish dedication to countertrends

(dandy - 1. a man unduly devoted to style, neatness, and fashion in dress and appearance)

Also, metrosexual is ok.