Rio Natsume (夏目理緒, Rio Natsume? born 20 February 1985) is a Japanese gravure idol. She is best known for having extremely large natural breasts on a petite and slender yet curvaceous body. She has released several DVDs and photobooks and has appeared in several TV shows in Japan.
In 2005, Natsume was featured in a video game called “Gal of the Sparrow 2”, which also features other popular J-idols such as Chikako Sakuragi, Saori Yamamoto, Yuka Watanabe, Akari, Kaede Shimizu, Hitomi Okada and Hatsune Matsushima. This DVD/video game is sold only in Japan.
She has become one of the most popular Japanese big bust idols, achieving international fame, primarily through the internet. It has been remarked by one critic that Rio’s breasts are so “effusive” that she can “show more from any angle in a bikini top than most women can fully nude,”[citation needed] while another has claimed she has “some of the most perfect boobs around.”