According to the AP news agency, citing Doris Day's Animal Welfare Foundation, the US singer and actress suffered from pneumonia and died surrounded by her family and friends at her home in Carmel-by-the-Sea, California.

Her breakthrough came in the mid-50s

After the end of the Second World War, the German-American Doris Day, whose real name was Doris Mary Ann Kappelhoff, tried her hand as a singer in Hollywood. However, it was her roles in films such as "Heavy Colts in Delicate Hands" and "The Man Who Knew Too Much" that helped her make her breakthrough in the mid-1950s. The song "Que Sera, Sera" was also written for the Alfred Hitchcock thriller, which was sung by Doris Day and even won an Oscar.

As her success became more moderate from the mid-1960s onwards and her films were criticized as no longer contemporary, Doris Day withdrew more and more from the public eye.