Kelly Osbourne Supports Joan Rivers in Twitter Feud With Rihanna

Another feud got stirred up on Twitter and this time it's none other than Fashion Police co-host Joan Rivers and Rihanna!

OK! GALLERY: THE OSBOURNES CELEBRATE OZZY AT TRIBECA FILM FESTIVAL IN NYC

Joan stirred things up with one little ol' Tweet. She wrote, "Rihanna confessed to Oprah Winfrey that she still loves Chris Brown. Idiot! Now it's MY turn to slap her."

This is in reference to Rihanna's recent interview with Oprah when the Barbados-born star admitted she still has feelings for him despite his physical abuse. Well, the Grammy winner replied to Joan's comment. She quipped, "@Joan_Rivers wow u really do get slow when you're old huh?"

OK! GALLERY: KELLY OSBOURNE DEBUTS BRIGHTER PURPLE LOCKS IN WEST HOLLYWOOD

Meow! Do we sense a cat fight coming on? 

Joan responded and tried to tell her in her not-so-subtle way to walk away from Chris once and for all. The comedian wrote, "Honey, @Rihanna, everyone knows: If he hit you once, he’ll hit you again. Read the statistics. PS – Love to have you on Fashion Police!"

According to The Hollywood Reporter, Rihanna hasn't been booked for the E! show, but in the midst of all of this, Kelly Osbourne jumped in yesterday to show support for Joan and essentially tell Rihanna to lighten up. She wrote, "W/ the greatest of respect 2 a young lady of whom I love please get a sense of humor @Joan_Rivers paved the way 4 all us opinionated ladies!"

And with that thought, we're all entitled to be opinionated. What's your opinion — do you think Joan was right or did she cross the line?

RELATED STORIES:

Joan Rivers Protests Costco; Gets Escorted Out By Cops!

Melissa & Joan Rivers Ditch the Red Carpet For Reality TV