Chenoweth, an Oklahoma native, founded the charity in honor of her Maltese, Maddie.
"Maddie is a little dog but right now she's got her paws wrapped around her mama's home state of Oklahoma in a big hug of love and support following the devastating tornado," according to a statement. "So many lives, both human and animal, were torn apart. Maddie was IN Oklahoma, with her grandparents, at the time of the storm. You can imagine how this tragedy hits especially hard.
"We are going to do whatever we can to help those affected by the tornado to recover and rebuild. We will be sending food, building supplies, medical supplies and veterinarians, if needed. We want to see everyone reunited with lost pets and help families to heal and care for themselves during this difficult time."
The goal is to sell 1,000 T-shirts, which will raise $17,500 for disaster relief.