David Foster & Katharine McPhee - Christmas Songs

David Foster, Katharine McPhee - Christmas Songs

David Foster, Katharine McPhee - Christmas Songs

Michael Morris and Mary McCormack Step Out After He Was Seen Kissing Katharine McPhee

Katharine McPhee Sings Her Heart Out on "Scorpion"

'Amped up': Katharine McPhee holds on to her life in Scorpion

They're Engaged! David Foster Proposes to Katharine McPhee During Romantic Italian Getaway

David Foster and Katharine McPhee talk Las Vegas shows, raising young son

David Foster slammed for calling wife Katharine McPhee ‘fat’ on ‘American Idol’