stassi schroeder's co-star, Ariana Madix, appeared on last night's episode of "Watch What Happens Live" with Lala Kent and after the show, the two "Vanderpump Rules" stars were involved in a messy Twitter feud.

After hearing about the topics of the show, Schroeder tweeted to her fans, encouraging them to wake her up when they figure out what she had done to Madix. In response, Madix told Schroeder that it wasn't about what she had done to her personally, it was about how she treats others. At that point, Katie Maloney got in on the action, telling Madix, "Love you but if your gage is on how people treat other people....

I have an opinion on that."

Is Ariana Madix being fake?

Amid Schroeder and Madix's Twitter feud, Schroeder's friend, Rachael O'Brien weighed in on the situation, claiming Madix acts much different to Schroeder's face than she does when the cameras are rolling. "If viewers could only see how nice [Ariana Madix] is to [Stassi Schroeder] in real life," O'Brien tweeted. "Weird she tries to tear her down [and] act better only on camera."

"It's odd [as f**k]," Schroeder responded.

Stassi Schroeder took a major dig at Ariana Madix's past attempt at a Podcast

After thanking Madix for giving her Podcast series, "Straight Up With Stassi," a shoutout, Schroeder pointed out that Madix had attempted, unsuccessfully, a Podcast of her own.

She then noted that if Madix's series had worked out, she may have also made some not-so-ideal statements on air.

During a recent taping of her Podcast series, Schroeder spoke of her thoughts on racism and the ongoing complaints by certain ethnicities. Not surprisingly, the reality star received tons of backlash for her statements.

That said, several of her close friends and co-stars have come to her defense in the days since her Podcast was shared and made it clear that she is not at all racist and didn't mean to offend anyone.

To see more of Stassi Schroeder and her co-stars, including Ariana Madix, tune in to "Vanderpump Rules" season five on Monday nights on Bravo TV at 9 p.m.