By Jeff Labrecque
November 18, 2010 at 10:19 PM EST

Conan O’Brien isn’t the only member of his family making a splash onscreen this season. His younger sister, Kate, makes her film-acting debut in the Mark Wahlberg-Christian Bale boxing flick, The Fighter, playing “Beaver,” one of real-life pug Micky Ward’s seven devoted but hopelessly selfish sisters. Actually, the character’s Christian name is Phyllis, but her family calls her Beaver. (Of course they do. One of the other sisters goes by “Red Dog.”)

So take a good look, and try and guess which sis is Conan’s kin? (See the answer after the jump.*) If you need the whole trailer to decide, click here.Answer: Kate O’Brien is the sister on the far right. More uncanny than this, right?

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