Prince George seems to have a kind of uniform 鈥 shorts with dress shoes, socks, and a collared shirt. The go-to look is not only cute; it lets the little prince move around all while looking presentable, but it turns out comfort isn鈥檛 the only reason behind this uniform. Like with his mom Kate Middleton鈥檚 outfits, there鈥檚 always a meaning in the way the young royal dresses.

We were treated to several versions of his shorts and shirt combo during the royal tour of Poland and Germany, but we didn鈥檛 second guess it much. After all, it is summer! But etiquette expert William Hanson told The Daily Mail there鈥檚 a long-standing historical reason why we never see the toddler in pants. It dates back to a 16th century tradition where little boys aren鈥檛 graduated to pants until they鈥檙e a little older, in a process called 鈥渂reeching.鈥

This practice is a marker of class for British nobility, and the fact that we鈥檝e never seen him in pants is definitely no accident. 鈥淣ot only does The Duchess of Cambridge have to worry about what she is wearing in public, but she has to dress her own children and find a balance between royal tradition and heritage and more proletariat customs, such as the 鈥榮uburban鈥 habit of making young boys wear trousers,鈥 Hanson told The Daily Mail.

Although it dates back centuries, noble families and even public schools (which, confusingly, are actually private schools in the UK) still follow the tradition. 鈥淏ritish upper classes, and particularly royals, are especially keen to hold on to tradition, so this sartorial one will silently mark them out from 鈥榯he rest鈥,鈥 Hanson noted.

Fall might be around the corner, and it may never be that warm in the UK, but don鈥檛 expect to see Prince George in slacks any time soon. Hanson noted that, per tradition, boys start wearing trousers around the age of eight. As the prince just celebrated his fourth birthday, that means we can expect him to rock four more years of adorable shorts!

Do you love Prince George鈥檚 shorts outfits? Tell us your favorite fashion moment from the royal toddler @BritandCo!

(h/t InStyle; photos via John Stillwell, The Duke and Duchess of Cambridge, Andrew Milligan, Andrew Matthews, Chris Jackson/Getty)