Tyler and Catelynn Baltierra's baby girl is going to be a big sister. The proud 26-year-old father Tyler Baltierra took to Instagram to share an adorable clip of his daughter Nova looking at a sonogram copy of her baby sibling. 

The three and a half-year-old Novalee Reign is seen smiling as she holds onto her sibling's sonogram picture. 'Teen Mom OG' star Tyler wrote in the caption, "She’s so excited to be a big sister & it’s just melting this daddy’s heart to see her so happy! 😍😭 #NovaleeReign #BabyBaltierra". Tyler and his 26-year-old wife Catelynn are expecting their third baby together. The couple has a 9-year-old daughter Carly whom they gave up for adoption in the year 2009. 

Little Novalee could contain her delight and excitement and in a small video clip was seen saying, "It’s waving to me!" as she kissed the photograph of her mother's scan. "It’s a tiny baby!" she said as she jumped around. 

It was only last month that Catelynn took to her social media to share the first look at her unborn child and wrote as a caption, "Already can’t wait to meet you little nugget." The couple announced the pregnancy in September after Catelynn had suffered a miscarriage. As reported by People, Catelynn shared in an interview that she was putting her pregnancy "in God’s hands." 

"I think it’s always going to be in the back of somebody’s head when you struggle, like, with a miscarriage," Catelynn added. "But I mean, I was just — I put it in God’s hands, really. Whatever happens, is meant to happen and I just kind of go with whatever his plan is."

Catelynn is most thrilled to see her youngest daughter interact with and be excited about a younger sibling. "I’m super excited to see Nova as a big sister. She’s super excited. She always asks questions, and now she’s at the point where she’s asking me how come it’s not coming out yet and I’m like, ‘Well, because it’s growing its arms and legs,’ and all that stuff." Catelynn and Tyler have been together for around 13 years and also celebrated their third wedding anniversary in August.