BLECK! This is some effed up shiz!
Playboy twins and Hugh Hefner's former whores Karissa and Kristina Shannon decided to to share this less-than sisterly display of
incest mutual respect and admiration at the mansion's annual Mid Summer's Night Dream party, and we'll just leave it at that.
We're sufficiently grossed out enough for one day, thank you very much!
[Image via Pacific Coast News Online.]