Final answer:
Jean Harlow was the first woman to be nicknamed the 'blonde bombshell' due to her iconic platinum blonde hair and seductive persona during the 1930s.
Step-by-step explanation:
The first woman to be nicknamed the 'blonde bombshell' was Jean Harlow. Harlow was an American film actress during the 1930s, known for her platinum blonde hair and seductive persona. She starred in several successful films and was one of the biggest sex symbols of her time, earning her the nickname 'blonde bombshell.'