The name Lillie, along with its variations, has been popular in many English-speaking countries and has gained international appeal. It is often chosen for its timeless elegance and association with natural beauty. Lillie has seen a resurgence in popularity in recent years, reflecting the trend of vintage and floral-inspired names.

Lillie Langtry, born Emilie Charlotte Le Breton, was a British-American actress and socialite in the late 19th century. Known for her beauty and charm, she became a prominent figure in high society and was nicknamed "The Jersey Lily." The Lily flower, associated with the name Lillie, has been featured in various art forms, literature, and religious symbolism throughout history. It is considered a sacred flower in many cultures and is often associated with goddesses, purity, and divine beauty.

Lillie Hitchcock Coit, often known as Lillie Coit, was a well-known socialite and philanthropist in San Francisco, California during the late 19th and early 20th centuries. She is best remembered for her generous contributions to the city's fire department and her eccentric personality. The Coit Tower in San Francisco was built in her honor.