PHOTO: Stephanie Pratt Looked Legal At High Scool Prom!

Before Stephanie Pratt hiked up her hemline and showed off her tan gams at A-list red carpet events, she was just an L.A. girl like the rest of, well, L.A. girls, trying her damndest to look closer to 21 than 17. And judging by this pic taken of her right before prom, she definitely knew how to pull it off. We're not sure who she went with, but the former "Hills" hottie certainly pushed the limits with her attention-grabbing neckline and dramatic makeup.

+ Want to see more of your favorite stars dolled up for the high school dance? Flip through our photo gallery, then tune in this Saturday at 11am/10c for a special prom edition of "When I Was 17."