keeping maiden name after marriage

If a woman keeps her maiden name what is the proper way to address her?

Mrs, Ms, or Miss?

I have seen it done multiple ways, but am unsure what is the proper way.


Solution 1:

It is proper to refer her as Ms Smith (for example) regardless of her martial status. Since the woman in question kept her maiden name, I would opt for this title or use the appropriate occupational title (e.g. Doctor Smith, Professor Smith, Major Smith, etc.)

Miss is a title for an unmarried woman, and is not acceptable.

Solution 2:

Ask the lady how she wishes to be addressed.