Pornopedia:On this day/December/21
- 1970 – The American porn actress Michelle Aston is born in Los Angeles, California, USA.
- 1972 – The American porn actress Sarah Mercury is born in Cape Cod, Massachusetts, USA.
- 1981 – The American porn actress Syvette Wimberly is born in Houston, Texas, USA.
- 1988 – The American erotic model Nikki B. is born in Portland, Oregon, USA.
- 2005 – The porn movie True Hollywood Twins starring Austin Kincaid, Lacey Love and Lyndsey Love is released by the American studio Vivid.