Trending Short Coffin White Gel Nails : They're called ballerina nails or coffin nails because the shape resembles both a coffin and a ballerina's slipper. Check out our coffin nails selection for the very best in unique or custom, handmade pieces from our craft supplies & tools shops. Short Coffin White Gel Nails / Collection by christnya parton • last updated 7 weeks ago.