Up-and-coming actress Alexandra Daddario, 23, stars in the new film Percy Jackson and the Olympians: The Lightning Thief. We think she's a star in the making, and she looks pretty darn good in a strapless black and white asymmetrical gown at the film's premiere in New York City last night. More pics after the jump!

Her new film focuses on the son of Poseidon, who travels the Earth with the hopes of quelling a battle of the gods in an adaptation of Rick Riordan's best-selling children's book series. Alexandra plays Athena's 18-year-old daughter, Annabeth, a warrior at Camp Half-Blood with Percy and potential romantic foil.

Logan Lerman plays Percy. He was recently rumored to replace Tobey Maguire in Spider-Man 4. The film hits theaters on Feb. 12.

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