Kailyn Lowry's long-awaited 21st birthday has officially come and gone, but not without a hardcore celebration with fellow Teen Mom 2 castmates Leah Messer and Chelsea Houska ensued. Keep scrolling to catch all the latest in the life of our favorite teen moms… 

OK! News: Check Out Last Week's Teen Mom Scoop

Kailyn Lowry was husband-less for her 21st birthday since he's deployed somewhere, but she had plenty of fun celebrating with Chelsea and Leah, even posting this adorbs selfie on Instagram. Cuteness.

Watch: Exclusive Clip of Chelsea From Tonight's Teen Mom 2

And the MTV staff even made her her very own cake! So freakin' cute.

But you might be wondering where Jenelle Evans was during these birthday festivities. The answer? Not in rehab, that's for sure. Us Weekly is reporting that Jenelle left rehab after 4 days instead of the usual 30 because she felt like she wasn't being treated her for problems. Her real problem, she said on her Sulia page, is that she's addicted to relationships, not drugs. Mmmmmhm.

Photos: The Best Selfies Taken By The Teen Mom Cast

Meanwhile, Catelynn Lowell celebrating her birthday too—by having her first legal drink at Applebees. What else are you supposed to do when you turn 21, ya know?

Moving right along, Farrah Abraham celebrated St. Patrick's Day yesterday with daughter Sophia, who got very much into the holiday spirit. Check out the Twit pic she posted of her "little leprechaun.":

And let's not forget Leah Messer, who's just enjoying marital bliss these days and also experiementing with her hair color. What do you think of her new purple extensions?

OK! News: Why Kailyn Lowy Pushed Back Her Wedding Date

What was your favorite Teen Mom topic of the week? What'd we miss? Tweet us @OKMagazine or tell us on our Teen Mom Facebook page!

For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!

Sound off in the comments below!

Join the conversation