Meet Norma Stitz | The world's largest natural breasts : In 1999 the Guinness Book of World Records certified Norma Stitz as the possessor of the world's largest natural breasts. Norma Stitz's real name is Annie Hawkins-Turner. Her bra size is said to be 102ZZZ, and each of her breasts weigh around 56 pounds (25 kg).