Kate Middleton defies a 100-year-old royal tradition.

Kate Middleton broke a 115-year-old royal tradition established by Princess Alexandra in 1901 for her children.

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The tradition involved presenting shamrocks to the first Battalion Irish Guards on St Patrick's Day.

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Kate and William got married in 2011 and she has accompanied the Prince to the ceremony since then.

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Kate's decision to break with tradition was to spend time with her children.

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