No. No no no no no. Can you picture "The Honorable Judge Tigerlily Rose Johnson" or "Doctor Tigerlily Rose Johnson" or "President Tigerlily Rose Johnson"? Why not just Lily / Liliana / Lillian / Lilian with Tigerlily as your special nickname for her? That would be pretty cute.
I have Lily down also.Noah, 4 - "Dad, I love a fun guy!" Dan - "Oh really? Pumpkin, I'm so glad you think i'm a fun guy!" Noah, 4 - "No! Dad! I like fungi! you know mushrooms!".