I always rock it in either cleavage-y sl*t bomb tops balanced by superdark jeans- I'm ready to try skinny leg jeans, but irregardless, it'll be jeans with heels. Wedges are your friends for dancing the night away, stilettos are your enemies and flats/sneakers will leave you freezing outside!
I think the key to sexy and alluring is always balance. Without it, it just becomes trashy. I also like long sleeve tops with short skirts- my alternate get up! My fav long sleeve top is a sheer black cotton and I wear another sheer black tank top under it- the two together become opaque enough to only hint at hot and sexy, not scream it. I also looove v. short skirts but I pair tights with them to dial down the hooker factor- again, keep things balanced.
Also, show up in a v. nice car with a v. fancy boy, and your problems will be solved!
And call ahead and ask to be put on the guest list- you never know when it will work, it never hurts to ask, and you'll feel like the VIP girl you are when you do score a coveted place on the list! You never will have to deal with scummy bouncers that way!