Christina Applegate has been diagnosed with an early form of breast cancer! But she'll likely beat the disease, like her mother, who is a breast cancer survivor. "Benefitting from early detection through a doctor ordered MRI, the cancer is not life threatening," Christina's rep said in a statement. "Christina is following the recommended treatment of her doctors and will have a full recovery."

The Samantha Who? star will join Jennifer Aniston, Scarlett Johansson, Charlize Theron, Meryl Streep, and Sally Field for the Stand Up To Cancer telethon on September 8, which will simultaneously be broadcast on CBS, NBC, and ABC.