A socialite is a person — almost always rich, or married into money — who is well known for going to fashionable parties, charity dinners, gallery openings, fashion shows. Being seen is the point. A socialite is famous not for work, not for a skill, but for being present where the beautiful and important people are, and for the photographs that follow. The word is used mostly by newspapers and magazines, and it is not usually a compliment. It hints, gently, that the person does not do very much. Nobody calls themselves a socialite; other people call you one. It is also used far more of women than of men, which is worth noticing — a rich man who goes to the same parties is more likely to be called a businessman or a playboy. In Taiwan the newspapers use the same idea for the wives and daughters of business families who appear at charity balls. One more thing: as the internet changed who gets photographed, 'socialite' has started to sound a little old-fashioned, a word from the age of society pages; today's version is often called an influencer instead. Both mean someone whose being-seen is their job, but they belong to different worlds.