Can any kilt fiends identify this uniform's age and origin? (Photo heavy.)

[GildedLocks]

Hi XMarks, I've got some questions I'm hoping someone here can answer; if there's a more appropriate resource, let me know. I collected vintage clothing all throughout high school and I'm getting ready to clean out my closet and sell about half my collection on eBay. Among the things I'm trying to sell is a set of womens highland clothing which I really know nothing about; I bought it at an antique shop a few years ago and it includes a velvet double breasted jacket, a beautiful kilt, a plaid, a jabot, a cap and a pair of wool socks. There are not tags or inscriptions in it anywhere and it's made in strange proportions, so I'm assuming it was bespoke.

My conundrum is that I have no idea how old it is, where it's from, what exactly it was worn for or whether it has any worth. Y'all seem like the experts so I'm bringing my photos here. Click to enlarge.

The jacket is the most damaged item; the shop i bought it from left it near a sunny window, so sadly its green color is very faded, it's noticeable when the front panel is lifted away from the inner one. Horsehair lining's protruding a little at one panel's corner. There's also a lot of sweat damage in the lining. I wonder if it was used as a dance costume? I believe the buttons are pewter, very ornate— I can't make out the inscription on them. It's been made in an extremely long proportion and has an incredibly tiny waist; it would probably fit Kate Moss quite well.

jacket1.jpg
damage.jpg

High contrast detail of one button:
button.jpg

The kilt is gorgeous— it's why I had bought the uniform. A little sweat damage inside but nothing else dubious.

kilt.jpg

Here it is with The Thing. I know this is supposed to be slung over the shoulder, but I couldn't get it to look normal on my mannequin.

kilt2.jpg
plaid.jpg

And finally the cap, tiny socks and jabot. Socks are actually in great condition, hat's a bit mashed and jabot's sweat-stained.

cap.jpg
socks.jpg
jabot.jpg

What is the verdict? Is this a cool antique or just an exceptionally gross, sweaty contemporary item? What would you price this at if you were selling it?