A BABY, weighing 6.1kg and 57cm long, has been born naturally.

Jasleen, a baby girl, was born at University Hospital in Leipzig, Germany, on July 26, making her the country's largest-ever.

Stephen Lyttle, who tipped the scales at 7.399kg (16lb 5oz) when born at Kempsey Hospital on January 26, 1963, is Australia's heaviest. The average weight of an Australian baby is 3.37kg, according to the Australian Bureau of Statistics.

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Jasleen's mother was found to have an undiagnosed case of gestational diabetes, a condition which normally occurs around the 24th week of pregnancy and can lead to a larger-than-normal newborn.

Doctors said that the mother and daughter are well after the birth, with Jasleen remaining in the neonatal care unit, doctors said, German magazine Der Spiegel reported.

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The Guinness Book of World Records states the heaviest baby born was to Anna Bates, of Canada, in 1879. The 7'5" mother and her 7'11" husband welcomed a 23lb 12oz. baby boy, who died 11 hours later.

Pictures: Insane Guinness World Records