Tragic Loss: Katharine McPhee and David Foster Mourn Nanny's Death

Katharine McPhee and David Foster's nanny, who cared for their 2-year-old son, has passed away, prompting McPhee to leave their tour in Asia. The couple has not disclosed the details of the tragedy, but McPhee expressed her heavy heart and the need to be with their family. David Foster will continue performing at the scheduled concerts.