Grace Kelly and Prince Rainier III's Sweetest Moments With Their Children

The couple posed with their daughters, Princess Caroline and Princess Stéphanie, in Gstaad, Switzerland.

The pair enjoyed a stroll with daughter Stéphanie in Gstaad, Switzerland.

The royal couple were front and center for Princess Caroline's wedding to Philippe Junot in Monte Carlo, Monaco.

The couple posed with their two children, Princess Caroline, 3, and 19-month-old Prince Albert, as they left their hotel in Saulieu.

The couple stood on the balcony of the palace with their daughter, Princess Caroline, and son Albert II shortly after his birth.

The family stopped to smell the flowers while on vacation in Philadelphia.

Prince Albert made his first official appearance while visiting the Oceanographic Museum.

The couple flashed a smile as they arrived at Victoria Station with Princess Stéphanie, who was 2 at the time.

The family built a snowman during their Winter vacation.

Prince Rainier III shared a sweet moment with his daughter Princess Caroline at a charity dinner in Geneva, Switzerland.

The couple visited Grace's family in Philadelphia.