told Winfrey of her metamorphosis during their “One Night Only” concert/interview combo special Sunday on CBS.The 15-time Grammy-winner revealed she shed “somewhere around” 100 pounds from 2017 to 2019 as she coped with “terrifying anxiety attacks” while ending her marriage to entrepreneur Simon Christopher Konecki, 47. The London Native attributed her rapid weight loss in part to exercise, explaining that she was able to deadlift a whopping 170 pounds at her strongest.