I find it unattractive - and I know I'm outnumbered! Such dismal, funereal flowers, and so temperamental if one tries to grow them. And the sound is suspiciously close to 'silly'.
A good friend of mine is
Elizabeth, and her older brother and sister couldn't get further than
Lilli when she was born, so
Lilli she has remained. Perhaps you might consider
Elizabeth and use Lily/Lilli as a nn? The only actual nn I can think of for
Lily is Lil, which is not pleasant.