These are lovely photos. Thankyou Babalux.
The short shorts were very common for children in the sixties.
The Luxembourg children were certainly not suffering childhood obesity like today's youngsters.
They are very sweet looking children. All are handsome.
My husband has photos of his family and his school friends looking as bare legged.
(His older brother was born in the same year and month as Henri.)
I think kids clothing was less fashionable and more practical back then - made as play wear.
Maybe they played outdoors, making cubbies and climbing trees constantly and scuffing the knees out of any long pants should they have worn them.