Yukiko Iwai

, also known by the nickname , is a Japanese singer and actress born 26 May 1968 in Yokohama, Kanagawa Prefecture, Japan. Iwai was a member of the all-girl pop group Onyanko Club (from 21 June 1985 until 31 August 1987), and she was the shortest of all the members at 150 centimetres (4 ft 11 in). She was also half of the pop group Ushiroyubi Sasaregumi, a spin-off group of Onyanko Club. She graduated from (now Kaetsu Ariake Junior High and High School), but left (now Kaetsu University Junior College) before she finished. She has an older sister, Akiko, who is four years older than her and is said to look just like her.