There is only one shop that I have found in the greater DC metro area. It is in Old Town Alexandria called The Scottish Merchant and it shares space the John Crouch Tobacconist. They carry a nice selection of kilt accessories and Argyles, but they send their kilt orders out to Lochcarron for manufacture.

The prices are pretty reasonable since you consider that they have to pay rent for a building in Old Town! ;-)

Here's there info:

The Scottish Merchant
215 King Street
Alexandria VA 22314
Phone: 703-739-2302

The next closest shop is in Winchester, VA! That's why I've had to do much of my shopping by mail-order or over the Internet.

I did get a batch of kilt-socks from The Scottish Merchant recently and have been very pleased. The lady who runs the kilt side is Doris Swisshelm.

Hope that helps!

If you want to make a run down there together (since I know exactly where it is) let me know. I'd be happy to meet up with you and head down. I can always use more kilt stuff.