Aubree's A Big Sister! Watch 'Teen Mom 2' Star Chelsea Houska Reveal MAJOR Baby News

Big news for Aubree!

In a sneak peek clip for Teen Mom 2, Chelsea Houska tells her first child that she is going to be a big sister! After the 7-year-old returns home, a special gift is waiting for her on the kitchen counter.

The reality star asks Aubree to read the card out loud, which told her the exciting news! "You are going to be a big sister," she said with the biggest smile on her face. "Mommy has a baby in her tummy," Chelsea told her daughter.

A special episode of Teen Mom 2 airs Wednesday night at 8pm ET only on MTV!