British teenagers have been banned from wearing onesie pyjamas to school after they donned the giant jumpsuits when temperatures plummeted.
Chailey School in East Sussex last week told students they could wear warmer clothes to cope with the freezing weather gripping the United Kingdom.
But teachers were dismayed when students started turning up to class in the all-in-one pyjamas, local newspaper The Argus reported.
In a letter to parents the school clarified: "It is not appropriate or acceptable - as has occurred in a few cases - for students to wear onesies."
The school said warm clothes such as jumpers, jackets, hats and gloves were much more acceptable.