Last Night's Look: Hit or Miss?

Vote on this week's styles including Ashlee Simpson, Mariah Carey and more stars! You decide – are they fashionistas or flops?

  • MICHELLE TRACHTENBERG photo | Michelle Trachtenberg

Credit: Jason Merritt/Getty

Updated: Friday May 15, 2009 | 11:45 AM EDT

MICHELLE TRACHTENBERG

She might be back to her old scheming ways on the Upper East Side, but the Gossip Girl star is perfectly sweet in her navy blue-topped pencil dress and nude peep-toes for a NBC event in Hollywood.