Sandra Bullock has donated $1m (€840,000) to the American Red Cross, as Hollywood stars pledge money to help the thousands afflicted by Storm Harvey. Comedian and actor Kevin Hart threw down the gauntlet and asked stars to match his donation of $50,000. Former wrestler Dwayne “The Rock” Johnson, who made $65m in the year up to June according to Forbes, said he pledged $25,000. The Kardashians donated $500,000 collectively to the Red Cross and Salvation Army. Beyoncé, who is from Houston, told the Houston Chronicle her philanthropic organisation BeyGOOD would be trying to help relief efforts. “My heart goes out to my home town, Houston, and I remain in constant prayer for those affected and for the rescuers who have been so brave and determined to do so much to help,” she said.