The two redhead comedy icons met in 1959 — and stayed friends for 30 years.

The fashion designer aided in undercover missions for Abwehr during World War II.

The personal contents were placed in a box and weren't revealed until more than 100 years after the president's assassination.

The first lady continued to wear the outfit covered in her husband's blood to convey a message and as a way of coping with her own trauma.

Though they only met in person once, Princess Diana and Michael Jackson forged a friendship through late-night phone calls in which they commiserated over their public lives.

The prosecution and defense teams, combined with star witnesses, aided in the case being named the "Trial of the Century."

Take a look at images of these American world leaders before they took office.

After the terrorist attacks in September 2001, Fred Rogers offered heartfelt words of hope and recovery.

The unveiling of previously hidden passages in 2018 revealed there was still more to learn about the famed documentarian of Nazi oppression.

The rapper's professional and personal life was at an all-time high when he was gunned down in September 1996.

During an 18-month separation from Yoko Ono, Lennon reached musical highs as well as personal lows.

To great controversy, Lady Day introduced the world to the racially charged protest song "Strange Fruit." In the end, some believe it killed her.

Despite JFK's father feuding with the Prime Minister during World War II, the late president idolized and took cues from the British politician.

Gypsy Rose Blanchard's mother, Dee Dee, falsely claimed her daughter was suffering from different illnesses until Gypsy arranged for her boyfriend to kill her mother in 2015.

Research into Leonardo's genealogy traces his family to outside of Italy.

America’s favorite redhead was so much more than simply a gifted comedienne known for slapstick comedy and starring in one of the most beloved sitcoms of all time.

The Theranos founder and self-made billionaire used her charm and uncompromising determination to keep her blood testing company afloat for more than a decade.

The Prime Minister was rarely spotted without his favorite accessory — a cigar.

The August 1969 slayings of the movie star and others rocked Hollywood and introduced the world to the twisted mind of Charles Manson.

The love and respect between the choreographer and dancer would endure infidelities and even death.

Separate myth from reality by looking at nine facts about the famous criminals.

The Nirvana rocker was in a downward spiral that led to his death on April 5, 1994.

Together for more than a quarter of a century, the singer and his husband have two sons and credit communication as the key to a long-lasting relationship.

Take a look at the pictures of these notorious murderers after their arrest.