Another bundle of joy! Teen Mom 3’s Katie Yeager took to Instagram on Wednesday, September 7, to share the exciting news that she is pregnant and expecting her second child.

The 16 & Pregnant alum, 23, who welcomed daughter Molli in August 2011 with ex Joey Maes, posted an adorable snapshot of her firstborn seated in a rocking chair while reading the book Little Miss, Big Sis in a wooded area. In the background is a clothesline with three Disney-inspired dresses hanging from it.

“Sometimes being a big sister is even better than being a princess,” the Wyoming native captioned the photo. “March 2017 #babythayn”

Sometimes being a big sister is even better than being a princess. March 2017 ❤️?‍?‍?‍??? #babythayn A post shared by katiebyeager (@katiebyeager) on Sep 7, 2016 at 3:17pm PDT

The identity of Mr. Thayn (presumably the father of Yeager’s baby given her hashtag) remains unclear mainly because the former MTV personality has made a concerted effort to keep their romance off social media.

“I’ve been with a wonderful man for over a year. The sign of a happy relationship is no sign of it on social media,” she recently wrote on Instagram. “Even if I was single it would still be a blessing. I’ve been a single mom to Molli most of her life and she is amazing.”

In a September 7 interview with Starcasm, the young mom revealed that while she was looking to expand her family, she didn’t think it would happen so soon. “I expected it to take a year or so,” she said, adding that she removed her IUD in April. “I was shocked it happened so fast.”

As for picking out a name for her newest addition, the expectant reality star told the website that she hasn’t pinned down the perfect moniker just yet: “We haven’t decided on any names. We will find out the gender in the next month [and] then we will start talking about names and such.”