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Amanda Seyfried

Matt Sayles/Invision/AP; AKM-GSI

Amanda Seyfried might be feeling très miserable about this.

In a sartorial snafu, the 27-year-old blond Les Misérables star left little to the imagination while attending a SAG Awards afterparty Sunday.

Clad in an elegant tiered black-lace dress, the actress attempted to gracefully step into her car to head home from the Chateau Marmont. expertly navigating the precarious trek in sky-high heels. Unfortunately, as Seyfried turned away to finish the maneuver, the paps' flashbulbs—combined with the dress' sheer material—gave onlookers a wee bit more to see of the willowy star. Oops.

This was actually the second dress that Seyfried wore last night, having stepped out earlier in a sleek strapless Zac Posen number for the awards show itself.

Hey, at least Seyfried and the Les Mis cast had a good reason to celebrate at the festivities: Costar Anne Hathaway snagged SAG's best-supporting-actress award, cementing her as the frontrunner at next month's Oscars.