It is indeed Christina Aguilera's movie. Even Cher herself said that several times. And it's not seen as Cher's movie, but it's seen as a musical-comedy from two singing superstars. It doesn't matter what a girl in your film class say, because she doesn't speak for the public.
I don't know what your problems with Christina are, but she has deserved everything that she has accomplished in her life. Stop being so pressed and get a life. Seriously.
Christina Aguilera: PEOPLE Best Dressed Golden Globes 2011
With her film debut Burlesque nominated
for best comedy or musical, the singer looks
award-winning in a lace and jet beaded Zuhair
Murad strapless dress and Lorraine Schwartz
jewels.
!!!