The Daily Mail reports that the party planner arranged to have the sculptures made as a christening gift for the 3-month-old and his parents, Prince William and her sister, Kate.
According to Wrightson and Platt, the company that makes the sculptures, it takes 30 seconds to make the mold by placing the baby's feet in a jelly-like mixture of water and a seaweed-based powder (which is a long time to stop a newborn from wriggling around).
The sculptures can be made in colored glass, lead crystal, bronze or silver (which is the traditional christening metal). The price varies depending on the material chosen and the size of the child, but Middleton has reportedly spent about $11,000 on her gift.
The company can also make miniature versions for cufflinks or pendants.
While a spokesperson for Clarence House wouldn't confirm the gift, members of the British parliament are said to have opted for something a little more conservative – a handcrafted pine toy box, which cost $650.
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