Jenna Bush Hager's Halloween Costume Shocked Her 4-Year-Old Son (Exclusive)

Jenna Bush Hager and Hoda Kotb chat with ET's Rachel Smith at the Rockefeller Center Halloween event for the 'Today' show in New York City. Jenna tells ET that her son mistook her for his dad when she FaceTimed him while dressed up as Sonny Bono.