Help finding a dress?

I need to find a dress for a work event (going away dinner for our manager who's moving on to bigger and better things) and need some advice about what would flatter my body type before I actually head out shopping.

I'm 6', my measurements are 32-24-35, I weigh 130 pounds and am a 32A. The two biggest issues when trying to find clothes are getting things in an appropriate length and trying not to call attention to my disproportionately bodacious booty. Album

The atmosphere is going to be fairly casual, but I still want to look nice. Thanks in advance!

Quick Edit: I'm also a student and on a pretty tight budget! If you could direct me to where I could find cute pieces for $30 or less, it would be much appreciated. Number two: added fit pics