VANELi Aliz Slingback Pump

Price Range: $$

At Zappos.com:
Rating: 4 out of 5 stars – 184 ratings
Includes several 5 star reviews from narrow buyers –
one reviewer sized up a 1/2 size, and another sized up a full size.
Includes a 4 star review from a narrow buyer who wore them to a wedding and said they left red marks at the base of big toes, and were worn with an arch support band.
Also includes a couple reviews that said the narrow width was not narrow enough, and a couple reviews that said the narrow width was too narrow (especially in toe area).
Available in narrow and slim widths.
View shoe on Zappos site

At Nordstrom:
Rating: 4.2 out of 5 stars – 136 ratings
Includes a few 5 star reviews from narrow buyers, a couple of whom recommended ordering a 1/2 size up.
Also includes a review from a narrow buyer who said the narrow width was too narrow, a review from a buyer who normally wears medium width shoes but preferred the narrow width in this shoe, and a review from a narrow buyer who tried multiple sizes and said they all squeaked when walking (some other reviewers also mentioned squeaking).
Available in narrow and slim widths.
View shoe on Nordstrom site