The starlets of Teen Mom 2 might not share camera time, but these ladies are total BFFs in real life. In fact, they basically ship traveling pants to each other at this point. Sisterhood, guys! All of MTV's ladies with babies are close, but Kailyn Lowry and Jenelle Evans have an especially tight relationship, and Kailyn recently took it to Twitter to praise her gal pal for sobering up.

Fans have watched Jenelle's rough road to sobriety, and during this week's episode of Teen Mom 2 she opened up about how hard it is for her to stay clean — especially when she gets sudden cravings for heroin. Jenelle's willingness to discuss such personal matters on camera is truly brave, and Kailyn is just as impressed as we are!

"I'm so proud of Jenelle for becoming sober," Kailyn tweeted. "I know it's an uphill battle every day but gotta start somewhere!"

What a great friend! Jenelle is definitely lucky to have Kailyn in her life, and tweeted, "Thanks sooo much girl! I'm saw what u went through on tonight's episode. Man, all of us have diff struggles but we're strong."

Amen to that. It's amazing to watch the Teen Mom 2 ladies transform from immature teens to mature adults, and we love the fact that they're so supportive of each other.

What do you think of Kailyn's kind words for Jenelle? Hit the comments.