Royal Profile: 56 Facts about Princess Caroline of Hanover

1. Princess Caroline's full title and style at birth was Her Serene Highness Princess Caroline Louise Marguerite, Hereditary Princess of Monaco {Source}
2. Her present full title and style is: Her Royal Highness The Princess Caroline Louise Marguerite of Hanover, , Hereditary Princess of Monaco {Source}
3. She has held the title Hereditary Princess of Monaco twice in her lifetime: the time in between  her birth and her brother's from January 1957-March 1958, and from the death of her father in April 2005 to present day.
4. If her brother fails to give an legitimate child or legislation changes to allow Prince Albert’s present offspring to inherit, Princess Caroline will be the 1st reigning Sovereign Princess in 250+ years, and the 1st without a male regent. The last was in 1731, Princess Louise-Hippolyte (who's regent was her husband and cousin, Prince Jean, who also reigned after her death). Princess Louise-Hippolyte was Caroline's 7x great grandmother.
5. She was born on 23 January 1957, at the Palais Princier in Monaco {Source}
6. Her parents are Prince Rainier & Princess Grace.{Source}
7. She has two younger siblings, Prince Albert & Princess Stephanie.{Source}
8. As a child, she would bite her brother when her mother wasn't looking until one day Princess Grace noticed random bites on her son's arms, and realized it was her daughter doing it-and Princess Grace gave her daughter the same treatment when she wasn't paying attention one day {Source:
   The Royal House of Monaco: Dynasty of Glamour…Gallat, John. P. 48}.
9. She once ripped a picture book simply because her brother touched it {Source:
   The Royal House of Monaco: Dynasty of Glamour…Gallat, John. P. 70}
10. When she was 8 years old, she tried to drown her sister in a toilet after (as her defense was) when caught in the act: "She was annoying us!"{Source:
    The Royal House of Monaco: Dynasty of Glamour…Gallat, John. P. 70}
11. Her godparents were her 1st cousin, Margaret Davis & Seine Durchlaucht Georg 3. Fürst Festetics de Tolna.
12. Her astrological sign is Aquarius.
13. She attended local schools in Monaco, before boarding at St. Mary's, Ascot, where she earned her A-Levels in 1974 {Source}.
14. She had an active childhood, she was enrolled in ballet, piano and flute lessons{Source}.
15. During her summer holidays, the family would visit the Kellys, and she and her siblings would attend Pennsylvania summer camps {Source}
16. During these visits, Caroline would translate English commercials to French {Source}
17. She attended The University of Paris-Sorbonne, earning a degree in Philosophy and minors in Psychology and Biology{Source}
18. Before attending Sorbonne, she briefly attended Universite Dauphine as a political science major {Source}
19. She was also granted admissions to Princeton and Sorbonne {Source}
20. Her free time is spent doing a variety of sporting activities, including riding horses, swimming, water skiing or snow skiing {Source}
21. When she turned 22 years old, she was appointed President of Monégasque Committee for the International Year of Children  {Source}
22. In 1981, she founded the organization  Jeune J'Ecoute, who's goal it is to help troubled youngsters discuss their problems via a hotline  {Source}.
23. In April 1983, she became honorary president of the Guides de Monaco aka  l'Association des Guides et Scouts de Monaco since 1992  {Source}
24. Internationally, she has given high patronage to the Peter Le Marchant Trust {Source}
25. She was also appointed by her father as
1.  president of the Garden Club of Monaco
2. the Organizing Committee of the Festival of Monte-Carlo Arts and later renamed the Printemps des Arts de Monte-Carlo (Springtime Arts of Monte-Carlo)
3. The Prince Pierre Foundation 
4. The Princess Grace Foundation {Source}.
26. In 1993, she became President of  l'AMADE Mondiale (Association Mondiale des Amis de l'Enfance) or (Worldwide Association of Children's Friends){Source}.
27. She is president  and founder of Les Ballets de Monte Carlo{Source}.
28. She became a UNESCO Goodwill Ambassador in 2003 {Source}.
29. She speaks French, English, German, Spanish, and Italian {Source}.
30. She has been married three times and has four children. 
31. Her first marriage was to 17 year her senior Philippe Junot in 1979, they would divorce two years later{Source}. The marriage was annulled by the Vatican in 1992.
32. Her second marriage was to Stefano Casiraghi, in December 1983. Stefano Casiraghi. Stefano died in a boating accident in 1990{Source}.
33. Her marriage to Stefano produced three children:
1. Andrea Albert Pierre (1984)
2. Charlotte Marie Pomeline (1986)
3. Pierre Rainier Stefano (1987)
34. Her third marriage was to Prince Ernest-August of Hanover in 1999. It is assumed that they separated in 2009 as they have not been seen together publicly since{Source}.
35. She was married to Prince Ernest-August on her 42nd birthday, 23 January{Source}.
36. This union with The Prince of Hanover produced one daughter Princess Alexandra of Hanover on 20 July 1999{Source} 
37. She is godmother to her niece and nephew:
1.  Louis Ducruet (1992)
2. Pauline Ducruet (John Glatt, The Royal House of Monaco: Dynasty of Glamour, Tragedy and Scandal ).
38. She is a major donor to the Virlanie Foundation {Source}
39. In the 1960s, her mother told a story how she took a young Caroline to meet The former Queen of Spain, but before leaving, Grace taught Caroline how to curtsy and say "How do you do?" when meeting the Queen. After being taught how to curtsy, she couldn't stop. When she met the Queen, she refused to curtsy, stating that "No, Caroline does not want". A little while later, the young princess gave the former Queen the flowers at the palace {Source: La Véritable Grace de Monaco  by Bertrand Meyer-Stabley (page 228-229)}. 
40. At the age of 6, she wrote her own biography {Source: La Véritable Grace de Monaco by Bertrand Meyer-Stabley (page 223)}
41. When she was a young child, she had a dog that she called Lindy, and also had a parrot and rabbit {Source: La Véritable Grace de Monaco by Bertrand Meyer-Stabley (page 223)}
42. She received the UNICEF Children’s Champion Award in 2006 {Source}
43. She served as the ceremonial first lady of Monaco after her mother's untimely death in 1982 until the marriage of her brother in 2011 {Source}
44. She obtained a judgment from the European Court of Human Rights condemning Germany for not respecting her right to a private life, following publications of photographs depicting the Princess in her daily life (24 June 2004) {Source}.
45. In 1983, she was engaged to Roberto "Robertino" Rossellini, who is the son of Ingrid Bergman {Source}.
46. She is a recipient of the 2011 MIE Award {Video}
47. Her former father-in-law and grandfather to her elder children, Giancarlo Casiraghi, died on her birthday in 1998.
48. Her golf cap is 29{Source}
49. In school, she was called "Grimmy" (for Grimaldi) {Source}
50. When she was young, on a visit to California, she went with one of her mother's friends to a shopping mall, where she threw a Royal Tantrum and the saleswoman commented to Grace's friend that  "This cannot be your daughter. I can see that your own daughter is well-behaved. Where did you pick up this child?", and Caroline boldly replied: "I'm Caroline, Princess Caroline. And don't you dare speak to me like that." {Source}
51. Princess Caroline took some flying lessons in the late 1970s {Source}
52. Princess Caroline was offered to play the leading role of Luchino Visconti film "L'innocente" by Visconti himself in the mid 70's, but Prince Rainier denied his permission, so actress Laura Antonelli was casted for that part{Source}.
53. She uses the perfume, Fracas by  Robert Piguet {Source}
54. She was called Max by her classmates as well {Source}
55. Her mother called her Caro Caline {Source}
56. She expressed desire to live with her grandmother in Paris while she studied at University {Source}
Happy 56th birthday, Princess Caroline!