Officials said they decided to enforce the ban because beach nudity is illegal and unfair to others who want to use the beach.
But nude sunbathers rejected the reasons for the crackdown, saying the stretch of beach in question is out of the way.
They decided to sue.
A lower court ruled last year that authorities have the right to ticket nude beachgoers. Thursday, the California Supreme Court essentially upheld the ruling by denying to review the case.
AP contributed to this report.
