Not only did the RHOC ladies clash upon their first meeting at the birthday party for Tamra Judge's granddaughter, Ava, but some tension also brewed between them after that disastrous dinner at the Quiet Woman. These instances have caused Shannon to accuse Lydia of trying to stir the pot among the OC squad.
But if you don't really understand why Shannon and Lydia just can't seem to get along, you're not alone. Shannon also tries to make sense of their drama in the video, above.
And then come back down here to see Lydia's side of the beef, below.