Trending Cute Short Coffin Nails Ideas / Cute christmas nail designs 2020 pick one of these cute christmas nails below and try on for your winter nail look. Coffin shaped nails (also known as ballerina nails) feature long length and squared tips. Cute Short Coffin Nails Ideas : So, even if your claws are more like that of a kitten rather than a big cat, you can still rock this stylish trend.