Sombrero Festival, also known as Sombrero Fest, is a two-nation fiesta and an annual three-day pre-Lenten celebration held in Brownsville, Texas, United States. The grito—a joyous Mexican shout—opens the festivities every year. This festival is a shared heritage celebration between the two border cities of Matamoros, Tamaulipas and Brownsville, Texas. This festival is designed to enhance the spirit of Charro Days, and to add to the festivities.