Cheryl has been accused of assaulting a nightclub worker and using racist abuse, which she denies doing.
The prosecution said she had only been famous for a few weeks and was "full of her own self-importance" on the night she allegedly punched Sophie Amogbokpa.
But Cheryl's defence lawyer said the people working in the nightclub had made up a story to make her look bad.
Since the case started both sides have been telling the jury what happened on the night.
The prosecution are arguing that the pop star hit and racially abused the toilet attendant.
The defence says she was acting in self-defence.
On Friday both sides were summing up the main points of their arguments.
The case will continue on Monday.