noun
Minato girl; young woman who frequents upscale Tokyo areas
Colloquial term for a young woman who enjoys socializing and being seen in fashionable, high-end neighborhoods of Minato Ward, such as Roppongi, Aoyama, and Azabu. Often carries a slightly trendy or aspirational connotation.
彼女は週末になると港区女子のように六本木で遊んでいる。
On weekends she hangs out in Roppongi like a Minato girl.
インスタには港区女子っぽい写真がたくさん投稿されている。
There are many photos posted on Instagram that look like those of a Minato girl.
Compound of 港区 (Minato Ward, a central Tokyo ward known for upscale neighborhoods) and 女子 (young woman). The term emerged in the 2010s as a label for a certain lifestyle-oriented social type.