All of the above!
I like uniforms

the more severe looking the better in my opinion especially if they have peaked visor caps or sexy side caps.
I also like to see men in holy gear, but that's another story.
For guys, anything that is stylish for the sake of itself is cool - i.e. spats, trilbies, top hats and elegant jewellery, cufflinks with little kinky or cute motifs.
Glasses that suit and a definitive retro hairstyle.
NICE AFTERSHAVE. i can't stress that enough people.
Also, i really think longjohns, vests and sock suspenders are really sexy, but not on show for a burlesque night - unless it's pyjama themed or something.
the main NO GO items:
Trainers, jeans, old t-shirts! If there ever was anything so unflattering on a man it's an old baggy t-shirt. Men's shoulders and arms are central o their sex appeal . If you plan to go out in some baggy spillowsack with holes, you might as well wear a wigwam and be done with it.
http://www.thegirlcanthelpit.com/
These guys specialise in men's wear too - all vintage but they don't do online.
hmmmm