actress Hilary Duff brought her ‘Blessings in a Backpack' program to Colombia Friday to distribute 3,000 knapsacks of food to poor children in a school district south of the capital city. Duff will spend three days visiting children and participating in a vaccination campaign. She was greeted by Bogota Mayor Samuel Moreno, whom Duff said gave her “an amazing invitation” to bring the program to Colombia. “We've been working for four years feeding children over the weekends,” she said. “They invited us to come here, and we got our first school in Bogota.” Duff and USA Harvest founder Stan Curtis started Blessings in a Backpack for children who get their best meals at school, giving them backpacks of food every Friday to take home and share with their families when they're away from their main source of nutrition. The program serves 106 schools and 26,000 children in the US and Canada.