This is the Evening Dress that looks "right" to me:









From The Scottish National Dress, 5th Edition, Wm Anderson & Sons, By Appointment To His Late Majesty King George V:

Highland Dress In The Evening

Coat and Waistcoat:
1. The Coatee (what we call Prince Charlies)
2. The Doublet (what we call Regulation Doublet)

Sporrans:
The sporran is usually made of sealskin or other fur with top and fittings silver or plated. Long horsehair sporrans are now seldom used. Leather sporrans are not used with evening dress.

Stockings:
These are knitted to match the tartan of the kilt, or diced stockings of different colours are correct.

Shoes:
Patent brogues, either lacing or buckling, are most usual, but plain patent court shoes with buckles are sometimes used.

Neckwear:
A wing collar or a lace jabot must be worn at all evening dress functions. If a wing collar is worn, a white or black bow tie must be used with it. Certain authorities maintain that a white tie should never be used, but the more generally accepted view is that the tie may be black or white at the discretion of the wearer. If a lace jabot be worn it takes the place of the collar, and the lace ruffles may be worn at the writsts.

Plaid:
The belted plaid may be worn at any evening dress functions.