The new moms at Crouse Hospital nursery are wearing smiles, but their babies are wearing red hats, knitted and crocheted by volunteers.

The hats are all part of a campaign by the American Heart Association, encouraging parents to live heart-healthy lives, while helping their children do the same.

The campaign raises awareness about heart disease.

Not only is heart disease the number one killer in America, but congenital heart defects are the most common type of birth defect.

Every year, thousands of infants are born or cared for at Crouse, so hospital staff say naturally when they heard about the campaign, they had to get involved.

The Little Hats, Big Hearts campaign first launched in Chicago in 2014, collecting 300 hats in the first year and has now expanded to more than 40 states.