Following Monday's historic tornado that devastated the Oklahoma City area, there has been an outpouring of support from public figures, celebrities, and everyday Americans. President Barack Obama addressed the nation from the White House Tuesday morning, expressing his severe concern and promising federal aid for the victims and families. As search and rescue teams scour the disaster grounds, celebrities have also been taking advantage of social media to share thoughts, prayers, and words of encouragement. Oklahoma natives Olivia Munn and Carrie Underwood gave personal accounts and hopes for fellow Oklahomans, as did Kristen Chenoweth, who also asked her followers to donate to the American Red Cross and Humane Society relief efforts. Click through to see how public figures and celebrities are coming together to support tornado victims.