Vintage White & Multi Colored Bow Sling Back Heels

I have found that I can wear a N one size up. So, perhaps these too will fit a 6.5? The slingback does have some stretch as there is a portion of elastic on the side. Label: Garolini, Made in Italy, Leather uppers, lining, and soles. Excellent, pre-owned condition. only marks at the base of the heel Measures: Length: 9.5", Widest part, Width: 3", Heel: 3.25 inches