I love Milla too but didn't think it was that common. I thought Mya would have been more common that Milla. There are a bazillion Mia's at the moment and I know of a Maia that always gets called Mia. Mila was on my girls name list last year.

Girls names are hard. I always thought naming bub was the easiest part but turned out to be a huge stress when DH is involved.

Good Luck!