Not all celebrities use ghostwriters, but it is common for some to do so, particularly in the realm of book publishing. Celebrities may work with ghostwriters to help them write their memoirs, autobiographies, or other types of books. Ghostwriting services is also commonly used in the music industry to help write lyrics or produce music.
However, there are also many celebrities who write their own material. Some celebrities are talented writers in their own right, while others may feel strongly about maintaining creative control over their work. Ultimately, whether a celebrity uses a ghostwriter or not is a personal choice and may depend on their goals and priorities.