Val Chmerkovskiy Gushes Over 'Greatest Gift' Son Rome (Exclusive)

Val Chmerkovskiy and Alix Earle chat with ET's Rachel Smith about 'Dancing With the Stars,' premiere Sept. 16 on ABC. Alix opens up about joining the competition series. Val gives an update on his son with wife fellow ballroom pro, Jenna Johnson, calling him 'the greatest gift.'