Kelly, 43, shared a group shot with the season 14 cast minus part-time Housewife Vicki Gunvalson.
"See who the ? snake is..." she also wrote before promoting the newest RHOC episode that premieres on Tuesday, August 27.
Fans thought the snake in this situation was Kelly's former friend Tamra Judge.
Kelly and The Cut Fitness owner had a big falling out this year. Tamra, 51, slammed her on The Jerry O Show by saying that she "just goes low" when attacking her fellow costars.
Although Vicki, 57, is not pictured, she still could be considered the snake. She and Kelly have continuously battled with one another ever since the "OG of the OC" accused her of doing cocaine during the season 13 reunion in November 2018.
Who do you think Kelly is referring to? Sound off in the comments!