Family life
Yamamoto's daughter, Limi Yamamoto, has followed in his footsteps. She debuted as a fashion designer at the Tokyo Fashion Week in 2000, showed in Tokyo from 2000 to 2007, and debuted to critical acclaim in Paris in 2007. Its brand name is LIMI feu.
In the late 1980s and early 1990s, Yamamoto was involved in a relationship with fellow Japanese avant-garde fashion designer Rei Kawakubo of Comme des Garçons fame.