Trending Short White Ballerina Acrylic Nails / They're called ballerina nails or coffin nails because the shape resembles both a coffin and a ballerina's slipper. They're called ballerina nails or coffin nails because the shape resembles both a coffin and a ballerina's slipper. Short White Ballerina Acrylic Nails / But most women go for long acrylics, can i get short acrylic nails then?.