Shannon Beador has taken aim at her former friend, Vicki Gunvalson, on Twitter.

Vicki Gunvalson Claims Tamra Barney Was First To Expose David Beador's Affair & Mistress' Identity

After watching Gunvalson discuss Tamra Barney's children, who have been involved in a messy custody battle with her ex-husband Simon for the last couple of years, Beador took to social media, where she labeled Gunvalson "cruel."

Is Shannon Beador Leaving 'RHOC?' She Participates In 'Last' Interview: 'We Can't Film At My House'

After The Real Housewives of Orange County season 10 came to an end, Beador ended her friendship with Gunvalson, claiming she had exposed her husband's affair to their castmates. However, Gunvalson tells a different story.

"The finale episode where Shannon feels I betrayed her by telling my brother and his girlfriend about David's affair was wrong. I never betrayed her, she was just embarrassed that it was exposed again when it was supposed to be about badgering me," Gunvalson explained.

"What you don't know is that last year Tamra actually told the group about David's affair at a dinner we were all at, and even disclosed the woman's name and information about her," Gunvalson continued. "Bottom line here is Shannon knew that Heather, Tamra, and Lizzie all knew and by me telling my brother privately in my home was not any secret."

For more Shannon Beador, tune into The Real Housewives of Orange County season 10 reunion special part three, airing next week on Bravo, and check out a clip of Beador at the reunion below.

Tags: shannon beador Vicki Gunvalson The Real Housewives of Orange County Bravo Reality TV