Kailyn Lowry made it a point to publicly congratulate her longtime friend and "Teen Mom 2" co-star, Chelsea Houska, after she gave birth earlier this week, but just one day later, when Jenelle Evans welcomed a baby of her own, Lowry was completely silent. Following months of back and forth between the cast, who has been known to bicker among themselves, Lowry blatantly snubbed Evans.

After ignoring the fact that Evans welcomed a baby girl with her boyfriend David Eason, the reality star's third child, Lowry took to Twitter to give a public shout out to Houska, who gave birth to a baby boy.

“So so happy for [Chelsea Houska] and her family!” Lowry tweeted. “Cannot wait to hold baby boy!”

Although Evans told Radar Online that she doesn't have a problem with Houska, despite having called her out for launching her own website as she had done months prior, she didn't comment on the news of Kailyn Lowry's snub. Instead, Evans ignored the issue as she continued to post social media updates regarding her baby girl on her many pages.

Kailyn Lowry and Chelsea Houska are close friends

In addition to starring alongside one another for the past several years on "Teen Mom 2," Kailyn Lowry and Chelsea Houska have enjoyed tons of additional time together in New York and Los Angeles, where the reunion and after show specials are shot.

As for the other cast members, Evans has complained about being left out in the past, and while Lowry and Leah Messer used to be close, their friendship seems to have faded in recent years.

Lowry's issues with Evans have been going on for the past several years and appeared to amp up when Evans began sharing news and rumors about Lowry and the other "Teen Mom" stars on her Twitter and Facebook pages.

As for their main issue with one another at this point in time, both Lowry and Evans have remained silent in regard to the possible reason behind their feud.

To see more of Kailyn Lowry and her co-stars, tune in to "Teen Mom 2" season 7B each Monday night at 9 p.m. on MTV.