Gwen Stefani Jokes Niall Horan Will Lose Shelton Family Adoption Status If He Snags 'The Voice' Win

Gwen Stefani chats with ET's Cassie DiLaura ahead of 'The Voice' finale, which airs next Monday and Tuesday on NBC. The coach reacts to having one team member, BIAS, left in the competition. She also jokes about what will happen to Niall Horan's Shelton family adoption status if he wins over her. Plus, Gwen details what special holiday dish she and Blake are making this year.