It’s back to school time for Adalynn “Addie” Calvert! The 8-year-old daughter of Teen Mom 2 star Leah Messer, 29, had her first day of 3rd grade on Aug. 18, and she posed outside the school for two cute photos taken by her famous mom. In the pics, which Leah shared to Instagram, Addie had on her backpack and looked so happy to be starting the new school year. See the photos below!