Taylor Swift's 12th studio album, The Life of a Showgirl, has shattered records, selling 4.002 million copies in its first week — the largest opening week in modern music history. But does this reflect her broad appeal or the dedication of her most loyal fans? Los Angeles (tca/dpa) — Madonna's "MDNA." Bruce Springsteen's "The Rising." Mariah Carey's "Memoirs of an Imperfect Angel." According to the Recording Industry Association of America, none of these albums — each the 12th studio LP by its respective maker — has sold 4 million copies in the United States in the decade or more since it was released. Yet that's what Taylor Swift just did in a single week withher12th album, "The Life of a Showgirl ," which Billboard reported Monday had moved 4.002 million copies in the seven days between

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