(digitalspy.co.uk) - Paris Hilton has donated an "extremely generous" sum of money to a Los Angeles children's hospital.The Children's Center for Cancer and Blood Diseases, which is expected to open in 2010, would not specify the amount the socialite donated.Commenting on her gift, Hilton said in a statement: "The children I have met through my involvement with Children's Hospital have truly touched my heart."I am proud to make a donation and lend my name to the fundraising effort to help children who are facing terribly serious illnesses."