Tot Agatha Holloway, who almost died when she was born three months before her time, had been ordered to have a massive feast on a daily basis to help her catch up with the weight of other kids.
The youngster, who weighed just 3lbs 11oz at birth, is surprisingly still small for her age at less than 17 pounds.
Her man-sized diet includes high-calorie prescription milk, clotted cream, full fat butter, high fat roasted meats, chocolates so that she reaches the 3,000-calorie mark- 500 extra than the recommended daily intake for a grown man.
Mother Samantha, a management consultant, revealed her daily struggle to feed the tot, who suffered a string of health problems in her first few months.
"It's hard and it goes against your natural instincts as a mother, but it has to be done," the Mirror quoted her as saying.
"I have to feed her up, but I would never give her fast food. We have to find healthy but high-calorie meals. I never use ready meals because they are full of salt, which is bad," she added.
The 35-year-old mother continued: "We used to weigh her bib before each meal, and then afterwards to calculate how much food was wasted. If she hadn't eaten enough, we had to keep trying throughout the day. Now she's eating more for herself, and is drinking from a cup and straw."
A paediatric dietician at Agatha's hospital in Surrey said: "Some children do need extra calories to help them grow. But it is important that they have a balanced diet which can be fortified with extra fats."