Prince Rainier III of Monaco and Grace Kelly, Hollywood's "queen" of the big screen. (Getty Images) According to Albert, Rainier invited Kelly to see his 225-room palace.

Grace Kelly had 3 children with her husband, Prince Rainier III. Here’s what the Monégasque royals are up to now.

Grace Kelly left behind Hollywood fame to become a princess when she married Prince Rainier III of Monaco – but life wasn’t always a fairytale. The Alfred Hitchcock blonde and Oscar winner ...

As iconic and beautiful as the movie star herself, Grace Kelly's royal wedding cake featured plenty of astonishing details.

Hollywood star Grace Kelly's 'perfect' $4m engagement ring, given to her by her husband Prince Rainier III of Monaco, was not ...

Unless you are actress Grace Kelly in the 1950s. Everyone knows that story: the Hollywood actress met a prince and fell in love. But there’s so much more to the romantic tale than most people know.

From Mariah Carey's record-breaking diamond to Grace Kelly's timeless Cartier classic, a look at the most expensive celebrity ...

Georgina Rodriguez has a 30-carat diamond engagement ring from Cristiano Ronaldo, but it's not the biggest celebrity ring.

When they first met, Grace Kelly was an Oscar-winning actress and Prince Rainier was . . . a prince. And though their relationship may have been more high-profile than most, their courtship had ...

Princess Grace Kelly was an adored figure in Monaco Grace Kelly | Herbert Dorfman/Corbis via Getty Images When Kelly married Prince Rainier III in 1956, she was a complete outsider to the royal scene.

Grace Kelly and Prince Rainier are seated in the Throne room of the Prince's Palace in Monaco, where they were married in a civil ceremony on April 18, 1956. Their Cathedral wedding is April 19.

This week marked 40 years since the death of American actress — and Princess of Monaco — Grace Kelly. The Prince's Palace honored the beloved figure on Wednesday.