The most boring uniform of the 18th century?

[Moriarty]

Yes, but I rather suspect you are not trying to keep your clothes from flying about whilst carrying: a targe, a dirk, a broadsword, one or more throwing pistols, and possibly a polearm or musket.

(If you are, then kudos to you - that's one tough nudist colony!)

Yes. Well. Each to their own, Dear. :-)

[Andrew_McGuire]

Actual 18th C. Prussians. Boring blue coats, teeny cuffs and fiddly lace. Lucky they were so good or they would have been a laughing stock.

The stock was nothing to laugh at (or in).