07/09/2010 03:45 pm ET | Updated May 25, 2011

Cow Appreciation Day 2010 (PHOTOS): People Dress Up Like Cows For Free Food

It's Cow Appreciation Day today, July 9, 2010, and for Chick-fil-A customers dressed up like cows, that means a free meal.

Chick-fil-A issued the "cattle call" via Facebook, Twitter and its Web site.

Here were the official rules for the Cow Appreciation Day 2010 free meal promotion from Chick-fil-A:

Guests dressed "head-to-hoof" in cow attire will be rewarded with a free Chick-fil-A meal (breakfast, lunch or dinner). For those "too chicken" to wear full cow costumes, Chick-fil-A will award a complimentary entree to customers partially dressed in cow attire, such as a cow-spotted scarf, purse, hat or other accessory.

People have been posting pictures of the event to Twitter. You be the judge: Who has the best cow costume?

Cow Appreciation Day 2010 Costumes (PHOTOS)