It's a girl!

Teen Mom 3 star Katie Yeager could not contain her joy and the soon-to-be mom-of-two took to Instagram to share the great news with fans.

The reality star posted a photo of daughter Molli revealing that the former MTV star is expecting a baby girl.

"Molli's reaction to getting a sister," she captioned the sweet shot of her first daughter holding a sign that reads "The stork told us we are having a girl."

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Molli's reaction to getting a sister

A post shared by katiebyeager (@katiebyeager) on

The star has yet to reveal who the father is, and has chosen to keep his identity a secret.

“I keep my private life private. 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. 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,” she said earlier this year.

Congratulations to the growing family!

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