The longest fingernails on a pair of hands (female) belong to Chris "The Dutchess" Walton (USA) and measure in at 309.8 cm (10 ft 2 in) for her left hand and 292.1 cm (9 ft 7 in) for her right hand, for a total of 601.9 cm (19 ft 9 in) as measured in Las Vegas, Nevada, USA, on 21 February 2011.
LEFT HAND - Thumb -- 3 ft, Index -- 1 ft 10 inches, Middle -- 1 ft 4 inches, Ring -- 2 ft, Pinky -- 2 ft
RIGHT HAND, Thumb -- 2 ft 11 inches, Pointer -- 1 ft 11 inches, Middle -- 1 ft 3 inches, Ring -- 2 ft, Pinky -- 1 ft 7 inches