In the 16th century, most Highlanders did not have shoes. The main garment was the leine, with the tartan wrapped around the outside and held up by the belt, and some form of sporran.
For today's way of thinking:
The leine is almost as much fabric as a Toga billowing around the body.
The kilt would have been like a king size plaid blanket pleated (not sewn in) in the rear and aproned over in the front, held up by a belt, the excess hanging over the belt, and on a shorter person, probably dragging on the ground.
The sporran was a pouch made of anything that was convenient, tied to the belt, or around the waist.
Shoes were very rare, and then more a moccasin of animal hide that was barely held on by a piece of leather around the ankle.

Not of the type of kilting we think of today, and certainly not collected in Hamish style.