Finding out you’re going to be a big sister is an exciting event, so after  find out they were pregnant, they got their daughter a special t-shirt. It simply says, ‘I’m The Big Sister,’ but soon to be big sis isn’t a master reader yet.

Once she finishes reading at the 3:30 mark it finally dawns on her, ‘Are you pregnant? YAY!’ and an adorable family celebration ensues. The video is going viral after jeremaniac posted it to Reddit