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LONDON, ENGLAND - NOVEMBER 12: Princess Charlene of Monaco receives a flower bouquet on arrival at the stadium prior to the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England. (Photo by David Rogers - RFU/The RFU Collection via Getty Imagesges)

LONDON, ENGLAND - NOVEMBER 12:  Princess Charlene of Monaco receives a flower bouquet on arrival at the stadium prior to the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England.  (Photo by David Rogers - RFU/The RFU Collection via Getty Imagesges)

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LONDON, ENGLAND - NOVEMBER 12: Princess Charlene of Monaco is seen on arrival at the stadium prior to the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England. (Photo by David Rogers - RFU/The RFU Collection via Getty Imagesges)

LONDON, ENGLAND - NOVEMBER 12:  Princess Charlene of Monaco is seen on arrival at the stadium prior to the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England.  (Photo by David Rogers - RFU/The RFU Collection via Getty Imagesges)

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Britain's Prince Harry (L) gives a thumbs up by Princess Charlene of Monaco before the rugby union test match between England and South Africa at Twickenham stadium in southwest London on November 12, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

Britain's Prince Harry (L) gives a thumbs up by Princess Charlene of Monaco before the rugby union test match between England and South Africa at Twickenham stadium in southwest London on November 12, 2016. / AFP / Adrian DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

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Britain's Prince Harry (L) stands by Princess Charlene of Monaco before the rugby union test match between England and South Africa at Twickenham stadium in southwest London on November 12, 2016. / AFP / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

Britain's Prince Harry (L) stands by Princess Charlene of Monaco before the rugby union test match between England and South Africa at Twickenham stadium in southwest London on November 12, 2016. / AFP / Adrian DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)

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LONDON, ENGLAND - NOVEMBER 12: Prince Harry presents a medal to Dylan Hartley of England while Princess Charlene of Monaco looks on after the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England. (Photo by Steve Bardens - RFU/The RFU Collection via Getty Imagesges)

LONDON, ENGLAND - NOVEMBER 12:  Prince Harry presents a medal to Dylan Hartley of England while Princess Charlene of Monaco looks on after the Old Mutual Wealth Series match between England and South Africa at Twickenham Stadium on November 12, 2016 in London, England.  (Photo by Steve Bardens - RFU/The RFU Collection via Getty Imagesges)