What are the best and worst uniforms worldwide of all times (yes it can be US)?

Besides this one as worn by SFC/SPC/whatever Samuel Jackson's character is supposed to be here,
I think the British Red Coats just don't make any tactical sense. I would wear the ACU in the woods before I wore the Red Coat

After the USMC dress uniform, this is my favorite.

If they weren't so damn comfy, I'd have to throw my vote as one of the worst for my old dungarees (bell-bottomed blue jeans as a military uniform? C'mon...) and chambray shirt (ESPECIALLY with the iron-on rank) from the Navy. Tie the look together with a baseball cap for added professionalism, lol...

Also, though it didn't really look bad, because of the nickname, I'd have to give an honorable mention to the old "Pinks and Greens."

Navy blueberries are just plain ridiculous.

Aesthetically and tactically the best.

Army Enlisted Dress Blues with the bold gold service stripes (best) ACU's hands down worst. I'd give the old grey PT's a solid honorable mention. Cheap and lasted forever. Shorts were a lil high though.

My basic training cycle, at Fort Dix, was the las to be issued O.D. Green fatigues and class b Khaki's. If they fit, they were both the best uniform, for their purpose, I ever wore.

I really liked my chambray shirt, dungarees, boonies and Dixie cup.

Blammies. The worst idea ever for a utility uniform. I only wear them when ordered. All the jokes about only being good at hiding you the one time you want to be found (when you fall overboard) are 100% on-point. I cannot wait till we fully transition to Navy Type 3 camo.

Best and worst were the two piece Nomex flight suit we wore in Vietnam. It was the best protection available at the time. It was without a doubt the ugliest and screamed a lack of military bearing regardless of who wore it.