Andrea Casiraghi

Andrea Casiraghi, left, son of Princess Caroline of Hanover, arrives for the screening of the film "Marie-Antoinette" at the 59th Cannes Film Festival in Cannes, southern France, on May 24, 2006. The Monaco palace announced the engagement of Casiraghi to Tatiana Santo Domingo of Colombia on July 4, 2012.

Prince Andrea Casiraghi arrives with girlfriend Tatiana Santo Domingo for the religious wedding of Prince Albert II of Monaco and Princess Charlene of Monaco at the Prince's Palace on July 2, 2011, in Monaco.

From left, Pierre Casiraghi, Charlotte Casiraghi and Andrea Casiraghi, the children of Princess Caroline of Hanover, arrive for a dinner at Opera terraces after the religious wedding ceremony of Prince Albert II on July 2, 2011, in Monaco.

Andrea Pierre Casiraghi is pictured during a news conference in Manila, Philippines, on Aug. 24, 2006. Casiraghi visited a detention center for youth as part of his philantrophic work for the AMADE Mondiale foundation - his mother's foundation that seeks to promote and protect children's rights.

Prince Albert II of Monaco, second from right, and his sister Princess Caroline of Hanover, right, attend the Ballets Russes dance company 100th anniversary gala on Dec. 20, 2002, with her children, from left, Andrea Casiraghi, Charlotte Casiraghi and Pierre Casiraghi.

Andrea Casiraghi, left, and his brother Pierre walk during the funeral procession for their grandfather, the late Prince Rainier III, on April 17, 2005, in Monaco.

Andrea Casiraghi attends the launch of new Jewellery collection "NEREE for ERE" by Repossi on Oct. 7, 2009, in Paris.

Charlotte Casiraghi, left, and Andrea Casiraghi arrive at the Prince's Palace during Monaco's National Day celebrations on Nov. 19, 2008, in Monaco.

Prince Andrea Casiraghi arrive to the Mango Party on July 16, 2007, at Atzaro Hotel in Ibiza, Spain.

In this handout photo, Andrea Casiraghi, left, is seen alongside Charlotte Casiraghi with Princess Caroline of Hanover and Prince Ersnt August of Hanover as they arrive at the Nijinski Awards ceremony on Dec. 7, 2006, in Monte Carlo.

After formally assuming Monaco's throne, Prince Albert II of Monaco, center, appears from the Monaco Palace with his nephews Pierre, right, and Andrea Casiraghi, Nov. 19, 2005.

The children of Princess Caroline, from left to right, Pierre Casiraghi, Charlotte Casiraghi and Andrea Casiraghi, and her stepsons, Prince Ernst-August of Hanover and Christian of Hanover, attend a Catholic Mass in Monaco July 12, 2005, when Prince Albert II of Monaco formally became ruler.

Andrea Casiraghi delivers a speech as Pierre Casiraghi, left, and Charlotte Casiraghi look on during the Monaco Rose Ball 2011 on March 19, 2011, in Monte Carlo.

Princess Caroline of Monaco poses with newborn son Pierre, husband Stefano Casiraghi, center, with daughter Charlotte, and brother Albert holding her son Andrea, in this 1987 photo.