Chick-fil-A is offering a free entree Tuesday to anyone dressed as a cow, to celebrate the restaurant's 13th annual Cow Appreciation Day.

According to chick-fil-a.com, to receive a free entree, adults can dress in any type of bovine attire, from someone as simple as a cow patterned or themed article of clothing or accessory, to a full on cow costume.

Children who dress in a full cow costume will get a free kid's meal.  The offer is good at Chick-fil-A restaurants nationwide, from opening until 7 p.m. local time.