Brad Pitt, Margo Robbie, and Leonardo DiCaprio in 2019 by Glenn Francis

A celebrity is a person who is well known and gets lots of public attention, or attention from other people. A person whom the public knows such as a person in government might be well known but not a celebrity unless something else makes them interesting to other people. Usually a person becomes a celebrity from entertainment such as people who are in movies, people who sing songs, and someone who plays a sport.