Nylon rounded up some of young Hollywood's hottest stars last night to celebrate its new issue with cover girls Vanessa Hudgens, Ashley Greene, and Portia Doubleday — who do you think was best dressed of the bunch? Vanessa brought along Zac Efron to playfully pose on the red carpet before they headed inside to catch up with their High School Musical costar Ashley Tisdale. Zac had some celebrating of his own to do after just getting nominated for Best Actor at this year's MTV Movie Awards. MTV was well-represented at the bash, as Whitney Port from The City turned up with boyfriend Ben Nemtin and The Hills girls Kristin Cavallari and Stephanie Pratt. Ashley Greene, meanwhile, picked a strapless dress for her big evening out and put aside any Breaking Dawn contract drama to let loose with her friends.
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