I'm not sure the Madame Alexander Mia Bella dolls are quite living up to the full potential of the reviewer however. Perhaps styles and quality have changed. Check doll reviews as they seem to vary by style, e.g. Asian doll is rated as much more ugly than some others, such as the Hispanic or African-American Doll and the "ethnic" dolls seem to be lacking authentic characteristics)
TIP: Visit Dolls Like Me for a variety of dolls from different races as well as bi-racial dolls.
Corolle has also introduced their smaller (13") Les Chéries dolls that span a variety of ethnic backgrounds as well. I always keep an eye out for Corolle dolls at discount online retailer http://www.kidsurplus.com/.
Whatever doll you choose, you may wish to take note of my "Health Care Plan for Dolls" recommendations for dealing with doll skin and hair problems!
Hint...think twice about curly haired dolls, like Our Generation's Alexis or Abrianna.