Abs-olutely stunning: Karlie Kloss has opened up about her grueling fitness regime, admitting that her SoulCycle instructor 'usually calls her out' because she tends to be 'one beat off of the rest of the class' The 21-year-old supermodel, who trained as a classical ballerina growing up, emphasises how important exercise is to her and says it's when she feels at her best.
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