Ariana Grande takes the stage in London for her Sweetener World Tour and shares a behind-the-scenes look at her life in rehearsal and on the road.Ariana Grande takes the stage in London for her Sweetener World Tour and shares a behind-the-scenes look at her life in rehearsal and on the road.Ariana Grande takes the stage in London for her Sweetener World Tour and shares a behind-the-scenes look at her life in rehearsal and on the road.