Drew Barrymore appeared on The Oprah Winfrey Show on Monday to announce that she is donating $1 million of her own money to the World Food Programme (WFP). The U.N. agency, for which Barrymore is an ambassador against hunger, will use the money to feed thousands of school children in Kenya as part of the "Fill the Cup" campaign.

"I have seen with my own eyes what a difference a simple cup of nutritious porridge can make in a child's life," Barrymore said in a statement, revealing she has traveled to Kenya twice in the past two years for WFP.

"It helps them learn, stay healthy and sets them on track for a bright future. I urge everyone -- everywhere -- to help WFP 'Fill the Cup' for hungry children, and make hunger history."

Visit www.wfp.org to donate.