Teen Mom Week in Review: Leah Celebrates Addie's First Birthday, Kailyn Gets Her Braces off and More

It was quite a busy morning in Teen Mom land with Jenelle Evans revealing her baby's gender and all, but honestly, the whole week was pretty jam-packed with news. Here's the latest Teen Mom scoop on Leah Messer's daughter's birthday party, Kailyn Lowry's new teeth, Amber Portwood's new selfies and more!

OK! Exclusive: Kailyn Lowry Gets an Ultrasound on This Week's Teen Mom 2

We gotta wish quite a few happy birthdays this week! Firstly, Leah Calvert and Jeremy celebrated little Addie's first birthday. How is that girl already one!? Check out this adorable pic from her owl-themed birthday party, plus tons more on Leah's Twitter page!

Kailyn Lowry and Javi Marroquin also had a party this weekend—for Isaac's fourth birthday! There's no pics yet of the little guy at his party, but Kail did post this great photo of the decor:

And speaking of great photos, Kailyn finally got her braces off! And then she immediately got reconstructive dental surgery to make her teeth look fuller. Like the final product?

Watch: Relive Jenelle Evans' First Date with Nathan Griffith

And as we all know, Jenelle Evans has finally revealed her baby's gender on Instagram! See the cute pic and find out if it's a boy or a girl right HERE.

OK! News: Which Other Reality Star Had a Baby This Weekend?

And while you're at it, make sure you watch our exclusive interview with Jenelle Evans and Chelsea Houska if you haven't already. Jenelle tells us how Nathan compares to Kieffer and Gary while Chelsea reveals what her relationship is like with Adam and his new girlfriend:

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Amber Portwood, meanwhile, is loving her freedom. Last week Gary Shirley posted a cute pic of Amber and their daughter Leah out and about, and now Amber is sharing her own pics of the mama/daughter duo. This one below is our favorite, but be sure to check out the rest on Facebook!

And in other cute pic news, Maci Bookout shared this new photo of her and her "two favorite men" over Super Bowl weekend. The little family took a long weekend in Gaitlinburg, Tennessee. Cuteness!

https://instagram.com/p/j73RCAwh2b/

OK! News: Read Our Recap of Last Week's Teen Mom 2

And one last photo of the week—Teen Mom 3's Mackenzie Douthit is about to pop! As she's been doing each month since she announced her pregnancy in August, Mackenzie shared this photo of her belly at 36 weeks. Basically she's about to give birth annnny day now.

What was your favorite TM story of the week? What do you think of Teen Mom 2 season 5 so far? Tweet us @OKMagazine or drop us a line on our Teen Mom Facebook page.