A socialite is a wealthy and famous person who takes part in social activities and spends a large amount of time entertaining and being entertained at upper-class events.[1]
The term includes many people who are "famous because they are famous". These people are not famous because of something they have done. They are famous most often because of which family they are a member of and/or how they are talked about by the media.
In history, many socialites were aristocrats who attended gatherings of other wealthy people. Many of them also had close ties to the British royal family and the House of Lords. Some modern socialites include Paris Hilton and Kim Kardashian.