Kinoshita was born in Katsushika, Tokyo, and attended Shibuya Liberal High School. She began modelling at the age of 19, when she got her first assignment as a lingerie model in the 2007 edition of Sanai swimsuit image girl. Later in 2008, she landed another assignment as an image girl for the company Kygnus Sekiyu. She also did gravure modelling and released two photobooks, with the first being Yukina 2007 and the second Wakannai in 2008, as well as two DVDs. She became famous primarily as a television personality, appearing first on the quiz showQuiz! Hexagon II, where she became known as a o-baka tarento. It was during this time that she became a part of the bands Pabo and Aladdin the Second. She has appeared in commercials for popular brands such as Pizza Hut, Kirin Brewery Company, and GREE, as well as in Japanese fashion magazines like Pinky and Vivi. In 2007 she was a regular on Pokémon Sunday.
Personal life
On August 28, 2010, she married the Japanese comedian Toshifumi Fujimoto, member of comedy duoFujiwara, with whom she co-starred on Quiz! Hexagon II. On August 6, 2012, Kinoshita gave birth to their first daughter. On November 3, 2015, she gave birth to their second daughter. In November, 2019, Kinoshita was involved in a scandal as she was discovered to have wrongfully accused and threatened a tapioca milk tea shop for mistakenly believing that they did not pay her sister who was working at the shop. Kinoshita was said to have of used forceful or threatening methods through her influence in the entertainment industry, which have been called by many netizens as a form of "bullying". Due to the event, Kinoshita subsequently was cut from numerous television programs she was previously a part of. Furthermore, Kinoshita divorced on December 31, 2019, after which it was discovered that there are suspicions of an affair between her and national team footballer Takashi Inui. She announced her temporary retirement from the entertainment industry in February, but resumed entertainment and work related activities on July 1, 2020. On July 6, 2020, it was announced that she had fully retired from the entertainment industry.
