Minnillo was in Sin City over the weekend to celebrate the release of "John Tucker Must Die" at Pure Nightclub in Caesar's Palace. The film's leading man, Jesse Metcalfe, was also there.

The former Miss Teen USA appeared to be having a great time as she sang and chatted with the crowd, took pictures of herself with fan's cameras and downed what looked like a shot -- which she did not seem to enjoy.

With Nick no where to be found, the stunning brunette spent the evening with girlfriends laughing and dancing the night away.