Media-whore Definition

noun

(derogatory) A person who attempts to transfer or transfers from one entertainment industry to another based only on prior popularity and not necessarily legitimate talent.

Lindsay Lohan is considered to be a media whore by many young people because she used her popularity in the television industry to leverage a career in the music industry.

Wiktionary

(derogatory) A person who craves media attention; someone who will apparently do anything to remain in the media spotlight.

Wiktionary