Monica Lewinsky might be the notorious case of an "other woman" made famous by her relationship with a public figure.
Between 1995 and 1996, Lewinsky worked in the White House as an intern under President Bill Clinton. Starting in 1995 and into 1997, on nine separate occasions, Lewinsky had sexual encounters with Clinton. Lewinsky even saved what would become the most infamous blue dress in U.S. history from one of those encounters.
When the relationship was brought to light, Clinton denied the accusations and even gave false testimony on the matter. Clinton was later impeached, but acquitted of all charges.
For her part, Lewinsky initially managed to capitalize on her fame, releasing a book, creating a line of handbags and even briefly appearing as a spokesperson for Jenny Craig. Since 2005, however, Lewinsky has shunned the spotlight, moving to London after finding herself unable to escape her notoriety in the United States.