Tim McGraw on Celebrating Wife Faith Hill's Birthday and Reuniting With Lance Bass (Exclusive)

Tim McGraw chats with ET's Cassie DiLaura backstage in Las Vegas at night one of the iHeartRadio Music Festival, which streamed live on Hulu. The country star opens up about his friendship with *NSYNC's Lance Bass. Then, he shares how he celebrated wife Faith Hill's 56th birthday and whether he and Faith would return to Vegas for a second residency.