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PARIS, FRANCE - MARCH 18: Princess Anne de Bourbon-Sicile attends Bertrand Matteoli Signing Book 'Bien Dans Sa Peau' at Librairie Galignali on March 18, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)

PARIS, FRANCE - MARCH 18:  Princess Anne de Bourbon-Sicile attends Bertrand Matteoli Signing Book 'Bien Dans Sa Peau' at Librairie Galignali on March 18, 2017 in Paris, France.  (Photo by Bertrand Rindoff Petroff/Getty Images)

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PARIS, FRANCE - MARCH 18: Bertrand Matteoli and Princess Anne de Bourbon-Sicile attend Bertrand Matteoli Signing Book 'Bien Dans Sa Peau' at Librairie Galignali on March 18, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)

PARIS, FRANCE - MARCH 18:  Bertrand Matteoli and Princess Anne de Bourbon-Sicile attend Bertrand Matteoli Signing Book 'Bien Dans Sa Peau' at Librairie Galignali on March 18, 2017 in Paris, France.  (Photo by Bertrand Rindoff Petroff/Getty Images)