Kelly, 43, trashed Vicki, 57, and Tamra Judge in an interview with PEOPLE on Thursday, August 8.
She called them both "stale" in reference to the storylines they have been bringing.
Kelly also called the mother-of-two a "senior citizen" and said that when she looks at Vicki it's like "AARP."
Vicki didn't take to Kelly's words too lightly and went off on her on an Instagram comment that was captured on Friday, August 9.
“I used to feel sorry for her, now I don’t,” Vicki began about Kelly. “She is an angry, volatile person.”
“Listen up girl!” Vicki continued while referencing the "stale" comment. “Our lives are always evolving and changing. We don’t have ‘storylines’. It’s a ‘reality show’… our reality!! Not fake stories like you.”
“I am a successful business owner, employ and inspire people all over the world to be financially independent of a man,” the insurance company founder continued. “You? Your only job is to find older rich men who want an arm ornament. You rent a 900 sq. ft apartment and pretend to be all smart! You mentioned you got a ‘windfall’ from (ex husband) Michael Dodd and can pay cash for a home like Tamras. Then why don’t you do it??”
Kelly and Vicki had a falling out last year when the latter set up Michael on a date with another woman.
Tensions escalated during the season 13 reunion when Vicki accused Kelly of doing cocaine.
Are you team Vicki or team Kelly? Sound off in the comments!