Princess Caroline, the first of Prince Rainier III and Princess Grace of Monaco's three children, was born on January 23, 1957. The Monaco royal family visited Athens in September 1961. Clockwise: Prince Rainier III, Princess Grace, Princess Caroline and Prince Albert.Photo: Getty Images
Six-year-old Caroline with mom Princess Grace and little brother Prince Albert in 1963.Photo: Getty Images
Young Caroline handed out Christmas presents to needy kids with mother Grace Kelly in 1971. Photo: Getty Images
Caroline looked stunning in lace in 1976.Photo: Getty Images
Princess Caroline wed first husband, financier Philippe Junot, on June 28, 1978, in Monte Carlo. They divorced in October 1980.Photo: Getty Images
Caroline and Philippe Junot hit the town in 1978. Photo: Getty Images
Caroline with her second husband, Italian heir Stefano Casiraghi, in December 1983.Photo: Getty Images
Caroline wore her best plaid while visiting London in 1986.Photo: Getty Images
The daughter of Grace Kelly certainly knew how to do glamour in 1986.Photo: Getty Images
Caroline and Stefano vacationed in St. Tropez circa 1988. The businessman, who is father of Princess Caroline's three oldest children, Andrea, Charlotte and Pierre Casiraghi, died in a boating accident in 1990.Photo: Getty Images
The Princess mingles with BFF Karl Lagerfeld and supermodel Claudia Schiffer at the Fall-Winter 1992 fashion shows in Paris.Photo: Getty Images
Caroline with brother Prince Albert, rear left, father Prince Rainier, rear center, and her three children – Pierre, center, Andrea, left, and Charlotte Casriaghi, right – on Monaco's National Day in 1995. Photo: PATRICK HERTZOG/AFP/Getty Images
The Princess with now-estranged husband Prince Ernst of Hanover and their daughter Princess Alexandra in 2003 in Paris, France.Photo: Getty Images
Princess Caroline attended Crown Prince Frederik and Crown Princess Mary of Denmark's May 2004 wedding wearing a stunning tiara. Photo: Gtresonline.com
Princess Caroline gazed out of the Palace window after the civil wedding ceremony of her brother Prince Albert and Princess Charlene in July 2011. Photo: Getty Images
Caroline rocked gold pants and stilettos while attending a 2013 sporting event with daughter Charlotte in Monaco.Photo: Getty Images
Uncle Karl! The Monaco royals (from left to right: Princess Charlene of Monaco, Prince Albert II of Monaco, Princess Caroline of Hanover, Caroline's daughter Charlotte Casiraghi, son Pierre Casiraghi, Pierre's fiance Beatrice Borromeo) posed with Chanel designer Karl Lagerfeld during the Rose Ball at Sporting Monte-Carlo in March 2014.Photo: Getty Images
Caroline showed even bohemian can be elegant in July 2014.Photo: Getty Images
The Queen of Chic alongside brother Albert and sister-in-law Princess Charlene in June 2014.Photo: Getty Images
Karl Lagerfeld joined the Princess and her look-alike daughter Charlotte Casiraghi at the Monaco Rose Ball in 2015.Photo: Getty Images
The proud grandmother showed grandson Sacha Casiraghi at Monaco's National Day on November 19, 2014.Photo: Getty Images
A family photo with all four of her children as well as brother Prince Albert (in military uniform) and Princess Charlene, who is to his right. Princess Alexandra is far left next to Princess Caroline, while Pierre Casiraghi and wife Beatrice are far right. Alongside Prince Albert are, left to right, Andrea Casiraghi and wife Tatiana Santo Domingo – holding hands with daughter India – Charlotte Casiraghi and Princess Stephanie's daughter Camille Gottlieb.