maggie230.jpgMaggie Grace just hit the casting lottery with a starring role in the upcoming Twilight movie Breaking Dawn.... joining Robert Pattinson, Kristen Stewart and Taylor Lautner on screen!

The 27-year-old actress, who shot to fame after starring as Shannon Rutherford on ABC's Lost, will play Irina ... a sexy Denali clan member who blames Edward Cullen's vampire family for killing her lover.

Also set to join the cast ... 9-year-old newcomer Mackenzie Foy. Time to vamp it up, ladies!

Breaking Dawn, which is the fourth novel from the Twilight series, will be split into two films. The first one will hit theaters November 18, 2011!