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CHARLOTTETOWN, PE - JULY 04: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge hug after taking part in a dragon boat race at Dalvay-by-the-sea on day 5 of the Royal Couple's North American Tour, July 4, 2011 in Charlottetown, Prince Edward Island, Canada. (Photo by Samir Hussein/WireImage)

CHARLOTTETOWN, PE - JULY 04:  (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge hug after taking part in a dragon boat race at Dalvay-by-the-sea on day 5 of the Royal Couple's North American Tour, July 4, 2011 in Charlottetown, Prince Edward Island, Canada.  (Photo by Samir Hussein/WireImage)

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CHARLOTTETOWN, PE - JULY 04: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge take part in a dragon boat race at Dalvay-by-the-sea on day 5 of the Royal Couple's North American Tour, July 4, 2011 in Charlottetown, Prince Edward Island, Canada. (Photo by Samir Hussein/WireImage)

CHARLOTTETOWN, PE - JULY 04:  Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge take part in a dragon boat race at Dalvay-by-the-sea on day 5 of the Royal Couple's North American Tour, July 4, 2011 in Charlottetown, Prince Edward Island, Canada.  (Photo by Samir Hussein/WireImage)

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PRINCE EDWARD ISLAND, PE - JULY 04: Catherine, Duchess of Cambridge rows in a dragon boat across Dalvay lake on July 4, 2011 in Charlottetown, Canada. (Photo by George Pimentel/WireImage)

PRINCE EDWARD ISLAND, PE - JULY 04:  Catherine, Duchess of Cambridge rows in a dragon boat across Dalvay lake on July 4, 2011 in Charlottetown, Canada.  (Photo by George Pimentel/WireImage)

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PRINCE EDWARD ISLAND, PE - JULY 04: Catherine, Duchess of Cambridge meets an actress who is dressed as Anne of Green Gables after rowing dragon boats across Dalvay lake on July 4, 2011 in Charlottetown, Canada. (Photo by George Pimentel/WireImage)

PRINCE EDWARD ISLAND, PE - JULY 04:  Catherine, Duchess of Cambridge meets an actress who is dressed as Anne of Green Gables after rowing dragon boats across Dalvay lake on July 4, 2011 in Charlottetown, Canada.  (Photo by George Pimentel/WireImage)