Katie Couric is a grandma ... be," Couric attempted to say before Ellie blurted out to her shocked mom, "I'm pregnant!" ...

Katie Couric just celebrated one of the most special ... Her face then goes serious. "I’m pregnant," Ellie Monahan said, off camera. "You are?" Couric replied as her jaw dropped.

Katie Couric shared a throwback video on Instagram on Sunday, revealing the moment her daughter, Ellie Monahan, told her she’s pregnant The 66-year-old journalist was caught off guard by her ...