Hot Shots: Stephanie And Lo Are Neckin' For Photogs

After gracing the cover of Runway Magazine's Summer 2010 Issue, Stephanie Pratt attended the issue's release party in Hollywood to celebrate. "The Hills" star-turned-cover girl posed solo on the red carpet in a smokin' hot strappy black dress before joining equally foxy costar Lo Bosworth (glad to see these two finally stopped fighting over J. Lo).

+ Both Hillzies opted for frocks with eye-catching necklines, but who pulled off this sultry look better? Sound off in the comments!