Emmy Rossum is a person.
Emmy Rossum . She is known for her portrayal of Fiona Gallagher in the television series Shameless . She starred in the science-fiction film The Day After Tomorrow ( 2004 ) and received critical acclaim for her performance in the leading role of Christine Daaé in The Phantom of the Opera ( 2004 ) . In 2007 , Rossum released her debut album , Inside Out .