Lee Redmond: World's Longest Fingernails --until she lost them on a car crash: Lee Redmond, a woman from Utah who has not cut her nails since 1979, had grown and carefully manicured them to reach a total length of 8.65 m (28 ft 4.5 in), and was listed in the Guinness Book of World Records as the world's longest fingernails. Sadly, on February, 2009, she lost them in a car crash.