Joan's comment may have been a bit too heated, but can be expected from the Queen of mean.

Joan quickly removed her response and replied with this.

A heated twitter battle between Joan Rivers and Rihanna has surfaced. Joan recently tweeted that Rih Rih is an "idiot" for admitting her feelings towards her ex-beau, Chris Brown, in a recent interview with Oprah. Are you suprised about the Queen mean? How have your feelings changed about Rihanna since the interview?

Don't hold your breath for Rihanna's Fashion Police appearance anytime soon.