I like
Noelle. I prefer when it's used for someone born around
Christmas time. It would seem a little odd to give it to a child who wasn't born around
Christmas time or had some kind of connection to that time of the year, but there are a lot of people who have names with meanings that don't apply to them, so it's not that strange, really. A lot of people don't know what most people's names mean, but then again, most people know that
Noel and
Noelle relate to
Christmas, though.
I would stick with
Noelle for a girl. I have seen
Noel as a feminine name before, but I automatically think of it as a male name when I see it.