The world’s most premature twins have celebrated their fourth birthday after defying the odds and thriving.

Despite doctors warning that they would likely not survive being born, the world’s most premature twins celebrated their fourth birthday on 4 March.

Adiah Laelynn and Adrial Luka Nadarajah, from Canada, were born in 2022 at only 22 weeks’ gestation, 126 days before they were due. Together, they weighed only 750 grams, meaning they also hold the record for being the lightest twins ever born.

Now, four years later, these tiny twins are thriving and are looking forward to starting school together soon.