What Makes a Kilt Formal?

[fluter]

Ah but Grant that photo is of us all in Semi-Formal wear, the question was what makes an outfit Formal. None of us were Formal that night.

Guys, remember that it was a Yank who asked the question. To us, formal means "I wore both shoes and socks."

And BTW Semi-Formal is a term of art more easily applicable to women's dress than men. However traditionally it meant black tie.