- Birthday: August 25, 1939
- Age: 78
- “Honorary Life” Member
Before she was announced as a honorary life member, it was teased that a JK (slang for school girl) would be joining. JK instead was Junko Koshino.
Junko is a Japanese fashion designer. She was made an honorary lifetime member of BiS in November 2013.
She is the oldest BiS member, debuting at the age of 74.