Lovedol ~Lovely Idol~ (らぶドル, Rabudoru?, lit. a Japanese portmanteau of Lovely Idol) is the title of a Japanese series which focuses on a group of young girls who are striving to become famous Japanese idols.

The entire series has a wide range of media, ranging from written prose to a video game and even an anime adaptation. Lovely Idol first began as a set of illustrated short stories serialized in Enterbrain's Magical Cute magazine. The franchise grew to include radio shows, drama CDs, a Japanese bishōjo game by PrincessSoft, and an anime TV series which began airing in Japan on October 2, 2006.

Source: Wikipedia