Former"Entertainment Tonight" correspondent and "Dancing With the Stars" co-host Samantha Harris has undergone a double mastectomy after having been diagnosed with breast cancer. "Made it thru grueling double mastectomy surgery," Harris, 40, tweeted Tuesday. "Thanks to all of my amazing surgical team. Like my 'art' b4 heading in?!" she added, referring to surgical markings drawn on her to aid in the operation. Harris and Michael Hess, her husband since 2005, have two young daughters, Josselyn, 6, and Hillary, 3.