Well, my Dd is Willow and one of her other names is Grace and it suits her very well as she's tall and willowy and not at all clumsy at 2.10yo. She even has curly hair
However! even I accidentally call her Willy as did her late Grand mother, which is not at all nice, so think carefully about it.
I called her Willy the other day and she said in a most indignant tone ' I'm NOT a willy!'