They have these ultrasound machines that deliver the “image” of the baby in 4D. There is a big difference between the 3D ultrasound and the 4D ultrasound. The 3D creates a three-dimensional image of your baby, while the 4D creates a live video. This is pretty interesting because you can actually see the face of your little baby! Now the 5D ultrasound creates a mold of your child and actually allows you to hold your unborn baby and the 6D ultrasound does your taxes. What will science come up with next?!