Gravure idols (グラビアアイドル, gurabia aidoru?) are Japanese models who often pose in bikinis and other provocative clothing for photo spreads in magazines aimed largely at men. They are known for their large breasts and suggestive poses. However, they do not pose nude or perform sexually explicit acts in their work. The term comes from photogravure, a type of printing process.
Recently there is also a trend of the increasing popularity of child gravure idol in Japan, some being as young as 10 years old.
Sample pic Gravure Idols
List of Japanese gravure idols