Sydney Prosser is a fictional character from the film American Hustle, which was released in 2013. She is portrayed by actress Amy Adams and is known for her intelligence and charm. Sydney plays a key role in a con artist scheme, using her skills to manipulate situations and people to achieve her goals. In the movie, Sydney is involved with another character, Irving Rosenfeld, played by Christian Bale. Together, they navigate a world of deception and crime, showcasing the complexities of their relationship and the challenges they face. Sydney's character is central to the film's themes of ambition and betrayal.