Katy Perry - The Hollow Heel Slingback. Color Biscotti. Low Stock. On sale for $71.99. MSRP $119.00.. 3.0 out of 5 starsAdd to favorites. 0 people have favorited thisLow StockBrand NameKaty PerryProduct NameThe Hollow Heel SlingbackGenderWomen'sColorBiscottiPrice$71.99MSRP: $119.00