The Duke and Duchess of Cambridge and the family of the Duchess attend a Christmas Day service near Bucklebury in southern England, Britain. Picture: AP

The two-year-old royal - who is the daughter of the Duke and Duchess of Cambridge - is believed to have racked up a whopping 10-figure net value sum within 24 months, according to the business valuation consultancy company Brand Finance.

Duchess Catherine, 35, first presented her youngest child to the public on May 2 after giving birth to her at London's St. Mary's Hospital, and it is believed since then anything the tiny tot wears sparks a surge in purchases for that item.

And Charlotte's estimated value has over-taken her older sibling Prince George, three, who reportedly has a net worth of R40 billion, whilst Catherine - who was formerly known as Kate Middleton prior to marrying Prince William in 2011 - is almost twice as more and has been calculated to be worth R80 billion .

However, it has been reported the only reason Charlotte's net worth exceeds her brother's is because of the "fashion market", which will see Charlotte's "endorsement effect" hit a "much broader" range of products and garments than George.

Britain's Princess Charlotte is seen in this undated handout photograph, taken at Anmer Hall in Norfolk, and released by Prince William and Catherine, Duchess of Cambridge. Picture: AP
Speaking about the difference in worth's to Marie Claire magazine, Brand Finance's marketing and communications director, Robert Haigh, explained: "This is actually as simple as the relative size of the men's and women's fashion markets, by which I mean that Charlotte's endorsement effect will likely be felt across a much broader range of products and brands or types of clothing than will George's, allowing a greater scope for the monetisation of her 'brand' and hence a higher value."