Are these kilts?

[andyfg]

If Hamish wears it, it must be a kilt.

Good argument, though to be philosophically more accurate:

a) Hamish wears only kilts
b) Hamish wears UKs
c) UKs are kilts

In this form it is logically valid, but I fear premise a) begs the question that we already know what kilts are, hence it is circular.