On the heels of Denise Richards' shocking and sudden announcement that she's leaving "The Real Housewives of Beverly Hills," fans are coming after Lisa Rinna, arguing that she's to blame.

Denise has not confirmed the fan theory, but the women haven't seen eye to eye lately. They've feuded over allegations that Denise had an affair with former "Housewives" star Brandi Glanville, which Denise has denied.
"Gutted @DENISE_RICHARDS is leaving #RHOBH – blame it on @lisarinna," one person tweeted.
The Blast cited other fans blaming Lisa.
"@lisarinna was so nasty to Denise this season. No wonder she decided to leave," another person said. "Rinna needs to get fired!"
"Ur a bad example of a friend . And all for ratings . U traded friendship for ratings," one person said. Another added, "The worst is Lisa Rinna. Her cruel treatment of Denise was so hard to watch. They were supposed to be friends."
Many others said the "Housewives" cast is full of mean girls.

Earlier in the week, a slew of "Housewives" stans called for Lisa to be fired. Many said as much on her Instagram.
"Your no lisa vanderpump and never will be no matter how much attention you need pathic," one person said. The reality TV star replied, "It's You're."
"FIRE Lisa, please!" another begged.
"Do [you] feel good saying that Karen?" Lisa replied. "Gosh I'd never want someone to lose their job and livelihood. What makes you like that Karen?"