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Barbara Bush and Jenna Bush Hager are the daughters of former President George W. Bush and Laura Bush

The sisters were profiled in Sisters Loved and Treasured: Stories of Unbreakable Bonds

In the book, they discuss their upbringing and hopes for the future

Barbara Bush knows exactly when she wants to die - at the same time as her twin sister, Jenna Bush Hager .

Barbara and Jenna, both 43, were profiled in ABC News correspondent and 20/20 co-host Deborah Roberts ' new book Sisters Loved and Treasured: Stories of Unbreakable Bonds .

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Reflecting on their childhood as the daughters of former President George W. Bush , 79, and his wife, Laura Bush , 78, Barbara said in the book t

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