The Cameron of Erracht kilt sold at WPG is not a replica of the 79th NY Cameron kilt. It is a more modern military kilt. A lot of 79th reenactors wear the modern kilts, but this is technically incorrect.

The kilts worn by the 79th NY Cameron Highlanders were 6 yards long, box pleated, and machine stitched throughout. The pleating was neither to stripe nor to sett -- it appears that the tailors attempted to pleat to the sett somewhat but it's not correct. The aprons are fringed, but the fringe doesn't line up to the sett of the tartan. There is a single strap & buckle on the outside of the right hip and a single strap and buckle on the inside of the left hip (how I make my kilts). All of these things are different from modern Cameron military kilts.

Remember, these kilts were made from Scottish cloth, but they were made by NY dress makers, not Scottish kilt makers, who were doing their best job at recreating a Scottish kilt with no training in doing such.