“Good Morning America” anchor Robin Roberts stops by to talk about her new book, “Brighter by the Day.” Plus, “Vanderpump Rules” star Lala Kent on her new memoir, “Give Them Lala,” and her road to sobriety and fame. And, 11-year-old model and actress Mia Armstrong, with her mom, Cara, on why she’s showing the world that Down syndrome is her superpower.