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The style of Diana Vickers' fashion line can be defined as boho-chic, a fusion of bohemian and chic aesthetics. This trend merges free-spirited, unconventional, and artistic bohemian elements with elegant and sophisticated chic sensibilities. It encapsulates a relaxed, eclectic, and personalized fashion sense that effortlessly blends vintage, ethnic, and casual influences for a stylish and trendy appeal.