De Ravin will be playing Belle, the beauty in Beauty and the Beast, according to a report this afternoon from TV Guide.
Emilie de Ravin (Claire in LOST) becomes the second LOST acting alum to get a role in Once Upon a Time. The first was Alan Dale (Charles Widmore in LOST), who will be playing Prince Charming’s father.
Editing to add 11/9/11: There is actually a third LOST alum in OUAT. Lana Parrilla, the Evil Queen, was in two episodes of LOST, playing Greta, one of the Others in the underwater Looking Glass station. (Hat tip to Geri in the comments.)
A version of this post was cross-posted in my LOST blog.