During the highly anticipated 15-minute segment on 20/20, Mariah confessed to having a very difficult pregnancy where she was on bedrest for weeks at a time.
She also discussed going through a heartbreaking miscarriage before finally becoming pregnant with her twins, and gave birth to little Moroccan and Monroe at 40 years old.
Mariah showed off the twins in their nursery and also sang to her little boy, Moroccan, during the segment.
Check out all of Mariah and Nick's official photos in the gallery above.
Are they what you were expecting? Let us know!