Lillianna is an elaborated spelling of Liliana, which joins Lily, from the Latin lilium, "lily", the flower of purity, to Anna, "grace". The doubled letters give it a romantic, old-world look that American parents favored in the 2000s. Lillianna entered the top 1000 in 2007, peaked at number 694 in 2011 and has fallen back to number 1358 in 2025.