Bethenny Frankel had branded Meghan Markle "sanctimonious" and likened her to one of The Real Housewives.
The 51-year-old reality star said that the Sussexes need to "let it go" and accused them of "creating more drama".
Meghan Markle recently invited a journalist from The Cut into her home to spill more details on the royal family as well as what life is like since leaving.