Kate Middleton models her £49,000 Cartier necklace

Kate Middleton knows the eyes of the world are on us for London 2012 and she and Prince William are going to be at every Olympic event possible.

For a visit to the National Portrait Gallery last week, Kate chose a patriotic royal blue dress designed by Stella McCartney - who created Team GB's official kit - accessorised with a ringed necklace from Cartier which cost £49,000.

Don't tell Prince Charles, who pays his daughter-in-law's work wardrobe, but Kate could've found a similar necklace by Diamonique by Andrea McClean at QVC for £53.25, which would've saved £48,946.75!

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Alison Tay