I loved this place and I cannot wait to go back. Body English was always fun, but it was a good thing they closed and opened up Vanity - the school girl theme was so 1999.
Great layout and nice decor, hot bartenders and cocktail waitresses. The outdoor patio was cool, but just like the inside of the club, space is small. The VIP tables aren't the best because they are along a walk way facing a wall, but still good because it is in the middle of the party where things are happening.
The line here is unorganized meaning you'll probably have a hard time figuring out which line is the general line, or where to go to find your "hook up"... either way, just ask a fellow partier.
i didn't pay much attention to the crowd because I was having a ball with my girls... from what I've heard, Jersey Shore threw up all over the place, but seriously, it's inevitable to run into over-tanned juice heads... it's Vegas and they'll be everywhere.
FINAL ANSWER: GO GO GO! You'll have a great time at this place. Either make sure you know a host that can take care of you at the line or go in line early.
TIP: Sunday is their best night.