A former bodyguard has sued Britney Spears, claiming the singer subjected him to "repeated unwanted sexual advances" and harassment.
Fernando Flores filed the sexual harassment lawsuit in suburban Los Angeles, alleging the singer intentionally inflicted emotional distress.
He is seeking unspecified damages from the Grammy Award-winner and his former employer, Advanced Security Concepts Corp.
The lawsuit claims that Spears, among other things, exposed herself to Mr Flores and summoned him to her bedroom while she was naked.
The singer has strongly denied the claims.
A statement posted on the star's website said she and her lawyers expect the case to be dismissed, and the Department of Children and Families took no action after investigating the allegations.
The statement said: "This lawsuit is another unfortunate situation where someone is trying to take advantage of the Spears family and make a name for himself. The Department of Children and Family Services conducted a proper investigation surrounding Mr Flores' accusations and have closed the case without any further action. Ms Spears and her attorneys have every expectation that this matter will be dismissed by the courts.
A lawyer for ex-husband, Kevin Federline, said Flores' allegations of children abuse are "baseless" and appeared to be motivated by money.
The bodyguard's employment with Spears appeared to be brief - his court filings state he started working for her in February and had "exhausted his administrative remedies" with a state agency by July.
Mr Flores' suit also claims he witnessed Spears engage in inappropriate conduct around her young sons and once borrowed his belt to discipline them.
The singer remains under a court-ordered conservatorship in which her personal and financial affairs are controlled by her father and an attorney, and monitored by a judge.
The conservatorship prevented Spears from being deposed or testifying during previous cases in which she was sued.
Spears, 28, has frequent visits with her sons, who she had with ex-husband Kevin Federline. He has not sought any changes to their custody arrangement in recent months, court records show.