A TINY U.K. baby born weighing just 0.46 kg has celebrated her first birthday after an incredible battle for survival.

Islay McDevitt, from Kirkintilloch, East Dunbartonshire, had to spend the first 119 days of her life in hospital after she was born premature at just 23 weeks.

Medics told her mom Tricia, 31, and dad Jamie, 34, that she had a less than 20 percent chance of survival, the Daily Record reports.

The newborn had to endure several nerve-wracking surgeries and procedures, blood transfusions and a life-threatening battle with sepsis.

But after defying the odds, on April 23, little Islay was showered with gifts when she turned 1.

“The nurses at the Queen Elizabeth said Islay was the smallest they had seen survive for a long time,” her dad Jamie says.

“The statistics were horrible, but she defied the odds right from the get go.”

Her parents had hoped to take her to hospital to see the NHS medics who saved her life, but instead celebrated the milestone at home due to the coronavirus pandemic.

“It’s not the birthday party we had planned but you make the most of what you’ve got,” Jamie continued.

“We had planned to take her back to the hospital on her birthday so they could see how she has progressed but we obviously weren’t able to do that.

“As soon as this is over and done with we’ll have a lot of visiting to do.”

Before Islay’s birth, her parents had been told at their 20-week scan that Tricia was in danger of going into labour at any time.

To thank the NHS staff who saved Islay’s life, Jamie is now planning to run the 154-kilometer West Highland Way in just 36 hours this summer.

(SD-Agencies)