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Chick-fil-A is giving away tons of free food on July 11.

Business Insider/Hayley Peterson

Chick-fil-A is giving away tons of free food on July 11 for its annual “Cow Appreciation Day.”

The fried-chicken chain will offer a free entrée — which includes chicken sandwiches, chicken nuggets, and more — to anyone dressed in “cow attire,” which can include a full costume or simply a cow-themed accessory like a handbag.

The promotion applies to…