The name has a bit of a child-like sound to it that makes me doubt it's going to suit most adults. Plus, the name only mkaes me think of the singer, whose music is rather dull and radio-friendly.
I always think of the "Thank You" singer when I heard this name. I think she's a nice singer and all, but I wouldn't name my girl this. I'm worried that she would be made fun of and of course they might accidentally put an "L" in it (Which is a terrible thing to do). It does have interesting history though, which is cool.