It’s official! While Christina Aguilera takes a breather for the birth of her second child, fashion mogul/rock phenomenon/super mom Gwen Stefani will join the next round of NBC’s The Voice. It’s hard to imagine a more inspiring coach. Stefani has sold close to 30 million records with her band No Doubt and as a solo artist. It’ll be great to watch Stefani step into the role of mentor to the contestants.