IPA: //ˈteɪsˌmeɪ.kər//
KK: /ˈteɪsˌmeɪkər/
A person who has a strong influence on what is popular or fashionable, especially in areas like fashion, music, or art.
As a tastemaker, she often introduces new styles that become trends.
Tastemaker → It is formed from "taste" (from Old French *taster*, meaning to sample or try) and "maker" (from Old English *macian*, meaning to make or create). A tastemaker is someone who creates or influences trends in taste, particularly in food, fashion, or culture.
Think of someone who 'samples' ('taste') and then 'creates' ('maker') trends — that's what a tastemaker does.