"teen mom 2" cast
Chelsea Houska (center, left) and Kailyn Lowry (center, right) are not pleased by the existence "Teen Mom 3" star Mackenzie McKee (not pictured) rumored sex tape. Here, they pose with their "Teen Mom 2" co-stars Leah Calvert (left) and Jenelle Evans (right) in a promo shot for MTV. MTV/Viacom

There is a battle brewing among the casts of MTV’s “Teen Mom” reality series. Following the reveal that “Teen Mom 3” star Mackenzie (Douthit) McKee’s allegedly has a sex tape, two of the girls from “Teen Mom 2” took to social media to blast the mom of two on Thursday.

TMZ broke the news that Vivid Entertainment, the porn group behind “Teen Mom OG” star Farrah Abraham’s infamous sex tape, obtained a personal video of Mackenzie’s. According to the site, the 20-year-old former reality star has issued a warning, via her lawyer, to keep the tape private. It is unknown how Vivid Entertainment got ahold of the tape and if Mackenzie’s partner in the video is her husband of almost two years, Josh McKee.

While Mackenzie has yet to directly respond to the sex tape rumors -- the Ashley’s Reality Roundup is reporting she is currently away at church camp -- that isn’t stopping the stars of “Teen Mom 2” from speaking out. Ahead of the premiere of their series’ sixth season next week, three cast members are slamming the MTV star for her alleged tape.

“Hasn’t this been done already ..?” star Chelsea Houska posted to Twitter alongside a link to TMZ’s article on Thursday. Kailyn Lowry retweeted Chelsea’s message to her 1.3 million Twitter followers and her husband, Javi Marroquin, even got in on the action. Javi posted laughing and crying emoticons in response to Chelsea’s tweet and she responded to her “Teen Mom 2” co-star by asking “you and Kail next!!??”

Check out their full Twitter exchange below:

Despite Mackenzie no longer starring on “Teen Mom 3” — MTV pulled the show off the air after one season in 2013 — she has made quite the splash lately. In May, the aspiring fitness model garnered attention for asking fans for $5,000 for a breast augmentation on the crowd-funding site FreeMyImplants.com. She denied making the request, and one month later, move forward with the surgery. She debuted her new look in Santa Barbara, California, on June 2.

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