They grow up so fast! Catelynn Lowell and Tyler Baltierra‘s daughter, Novalee Reign, just celebrated a new milestone — she’s sleeping in a big girl bed! Watch the video below for more details — and to see the sweet pic!

The Teen Mom OG stars recently celebrated their 12-year anniversary — yes, 12! — and Tyler took to Instagram to post a sweet tribute to his wife. He wrote, “I can’t believe that today marks 12 years together with you @catelynnmtv, babe you literally are the greatest gift this live has given me! We were only kids when we fell in love, but we were kids who knew what we wanted out of life & who we wanted to get it with. Not a lot of people get that opportunity or blessing at such a young age. Even though we were so young, I wish I could go back as far as I could just to love you longer! I am just so happy & honored to be your husband. I love you SO much! #HappyAnniversary #12YearsStrong #SoulMates #MiddleSchoolSweetheart.” BRB, crying!

The couple — who placed their daughter Carly, now 8, for adoption — got to visit their eldest little girl with Nova in August. Tyler tweeted, “On the plane to go see Carly for the first time in two years. Can’t wait to see her and Novalee together. Warms my heart just thinking about it.” Earlier in the month, Cate also took to social media to express her excitement. She wrote, “Sooo I get to see Carly this Aug!!! We are so excited and I cannot wait for Nova to see her again!!!” Adorable!

But don’t worry, the Baltierras aren’t done having kids just yet — especially when they’re so stinkin’ cute! In an interview with People in April, Catelynn said,”To all the people who are freaking out because they want me and Tyler to have more babies, we will one day… I’m definitely still on birth control.”

tyler baltierra snapchat

(Photo Credit: Snapchat)

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And it looks like “one day” might be sooner than later! Ty took to Snapchat to commemorate little Tootie’s big milestone and he hinted that he is ready for baby No. 3 in the caption. “Is this real life? I can’t believe my little baby is in a big girl bed now,” he wrote. “I need another baby now, like ASAP!”

Teen Mom 2 airs Mondays at 9 p.m. EST on MTV.

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