Christina Applegate

(AP Photo/Nick Ut / July 26, 2007)

Actress Christina Applegate, of the new television comedy "Samantha Who?," is seen during the ABC Summer Press Tour in Beverly Hills, Calif., in this July 26, 2007, file photo. According to the syndicated television newsmagazine "Extra," a representative of the actress announced late Saturday Aug. 2, 2008 Applegate is undergoing treatment for breast cancer.