Aris Allen Women's Houndstooth Spectator Oxford Wingtips with Street Soles
Most women with Average or Narrow feet said they chose their regular size or half a size smaller than normal. Women with Wide feet said they fit a half size larger than normal (or thought it was too narrow for their toes).
Because this style has a Blutcher closure (which means it is not sewn down at the bottom of the laces) you can customize the width a bit by loosening or tightening them.
Most women know which two sizes they fit best (like 6.5 & 7 or 8.5 & 9). To figure out which size you'll fit in these: