Marie Irvine was 99 years old when a chapter in her long-ago career became a TikTok sensation. During a crucial period late in Marilyn Monroe’s life, Ms. Irvine had been her makeup artist in New York City. When a TikTok star learned her story, it blew up the internet.

In 1958, Life magazine commissioned Richard Avedon to reimagine Ms. Monroe as the screen and stage sirens Clara Bow, Marlene Dietrich, Theda Bara, Jean Harlow and Lillian Russell. It was Ms. Irvine who assisted with her makeup — turning her into Ms. Russell’s candy-box pinup, and Ms. Dietrich’s steamy Lola Lola from the film “The Blue Angel.”