I need this font! Please help!

That is not a font. That is custom to the movie.

Oh, and the closest you'll come up with will be on dafont http://www.dafont.com/levibrush.font?text=BLACK+SWAN

the A's in the original are both different (as well as the L forms the cross bar in the A in black) and the brush used is probably a sumi brush and ink ...

make your own.