Charlotte Casiraghi, niece of Prince Albert and soon his bride-to-be Charlene Wittstock, is fixed to steal the 'other' Royal Wedding show when her uncle weds his longtime girlfriend this weekend.

Pippa Middleton, Kate's younger sister, famously grabbed the spotlight at the April wedding of the Duke and Duchess of Cambridge, turning many a head in a figure-revealing white wedding dress. Her fame now rivals her sister's , despite being a relatively unknown commoner before the wedding.

Charlotte Casiraghi, on the other hand, is no stranger to international attention - she is the granddaughter of the late Princess Grace and Prince Rainier of Monaco, and is fourth in line to the throne of Monaco. She is an avid equestrian and sometimes attends official royal engagements with her uncle, Prince Albert.

Drop-dead gorgeous and filthy rich, the camera often finds Charlotte although she certainly does not seek it out. No doubt she will be the focus of worldwide attention this weekend as she attends her uncle's wedding festivities.

Charlotte, who is the daugher of Princess Caroline of Hanover, has an estimated worth of 5.7 billion.

According to the Herald Sun, reporting from a Le Figaro story, Charlene will have six bridesmaids, but it is unclear if Charlotte will be one of them.

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Jumping International
Monaco's Prince Albert II (L), his niece Charlotte Casiraghi (2nd R), his sister Princess Caroline of Hanover (R) and his fiancee Charlene Wittstock (2nd L) attend the Jumping International of Monte Carlo in Monaco June 24, 2011. Reuters
Charlotte Jumping International
Charlotte Casiraghi, daughter of Princess Caroline of Hanover, talks with French actor Jean Rochefort (R) at the Jumping International of Monte Carlo in Monaco June 25, 2011 Reuters
Grand Prix
Princess Caroline's daughter Charlotte Casiraghi (R) walks in the pit lane with her boyfriend Alex Dellal before the Monaco F1 Grand Prix May 29, 2011 Reuters
With Charlene
Charlene Wittstock (L), fiancee of Prince Albert II of Monaco, and Charlotte Casiraghi, Princess Caroline of Hanover's daughter, stand at the Palace balcony during a parade for Monaco's National Day in Monte Carlo November 19, 2010 Reuters
Jumping Finals
Princess Caroline of Hanover's daughter Charlotte Casiraghi attend the finals of the International Jumping of Monaco event in Monte Carlo June 26, 2010 Reuters
Charlotte mass
Princess Caroline's daughter Charlotte Casiraghi attends a mass for the first anniversary of Prince Rainier's death at Monaco cathedral April 6, 2006. Reuters
Royal wedding