ah-ree-AH-na is my ideal pronounciation but my instinct always makes me pronounce the first part more like
Harry with a dropped H
I think it's very pretty but it worries me that it might morph into 'airy
Anna by teasers!
I don't think it's too common at all, and prefer it to
AriannaI have only known one
Ariana (ah-ree-AH-na)