Yao Defen, the Guinness World Record holder for World's Tallest Woman, has died at age 39. According to Chinese state media, Yao passed away in her home in eastern China, in the province of Anhui. Yao gained fame in 2010, when her height of 7 feet 7 inches won her the Guinness record for tallest living woman. Yao's height was caused by a tumor on her pituitary gland disrupting her levels of growth hormone. According to Chinese newspapers, Yao 6 feet 5 inches tall by the time she was 15. Although she had been bedridden recently, no official cause of death was given.