Pornopedia:On this day/September/21
- 1977 – The Asian-American porn actress and AVN Award winner Mia Smiles is born in Seoul, South Korea.
- 1981 – The American porn actress Phoenix Marie is born in Golden Valley, Arizona, USA.
- 1988 – The Czech porn actress Josette Most is born in the Czech Republic.
- 1989 – The American porn actress Arika Foxx is born in Tustin, California, USA.
- 2005 – The porn movie Zipless starring Avena Lee, Lain Oi and Mercedez is released by the American studio Vivid.