Lilly carries 65,475 cumulative American girls on SSA record and currently sits at rank 259, with a 2010 peak that placed her well inside the top 100. The double-L spelling has lived a parallel life to Lily for over a century, but the 2000s saw it overtake the simpler form in many years before settling into a steady plateau.
Latin botanical, Anglo spelling
Lilly traces ultimately to the Latin lilium, the lily flower, with associations of purity, grace, and Easter symbolism running through medieval Christian art. The double-L spelling is one of several historical English variants of Lily, with both spellings appearing in 19th-century American records.
The German pharmaceutical name Eli Lilly, founded 1876 in Indianapolis, gave the surname Lilly significant English-language visibility long before the modern girl-name revival. The given-name use has always been primarily Anglo-American rather than European: in France or Italy, the floral name takes other forms.
The botanical revival
Lilly's modern American revival kicked off around 2000 alongside Lily, both names riding the broader botanical wave that brought back Rose, Daisy, Iris, and Violet. By 2010, both spellings were inside the American top 30, marking one of the most thorough revivals of any once-dormant English name and reshaping the field of acceptable single-syllable floral first names along the way.
The name fits cleanly into the soft, two-syllable, vowel-friendly cluster that has dominated American girl naming since the 2000s: Ella, Emma, Mia, and Ava all share the same phonetic real estate. Browse the broader Latin girl names set for related botanical and floral options.
The counter-reading
The double-L spelling is a permanent administrative footnote. Lilly's bearer will correct teachers, prescription labels, and airline tickets her entire life, because Lily is the dictionary default and most people will autocorrect by reflex. Parents drawn to Lilly should be ready to spell it constantly without resentment.
Sibling pairings lean botanical and soft: Lilly and Daisy, Lilly and Rose, Lilly and Hazel, Lilly and Iris. Middle names tend traditional: Lilly Grace, Lilly Jane, Lilly Mae, Lilly Catherine. The combination of a single-syllable floral first name and a longer traditional middle name has been one of the most durable American naming patterns across the past two decades, and Lilly slots into the formula as cleanly as any name in the cluster. See where she sits on current SSA rankings.