Forget sex tapes, how about risking jail time to up your heiress status?

Casey Johnson, in line to inherit the Johnson & Johnson throne, was arrested in Los Angeles on grand theft charges, reports the New York Post.

The blonde heiress allegedly stole from model and rumored ex-girlfriend Jasmine Lennard, according to the paper.

Now for the the sordid details: Lennard told the site that she came home to find jewelry, legal documents, shoes, clothing and even underwear stolen.

Lennard then received a text message from Courtenay Semel, Johnson's on-again, off-again girlfriend and daughter of former Yahoo CEO Terry Semel, saying that she found Johnson wearing Lennard's underwear, states the source.

Jasmine called the cops and claims that they found the stolen items at Johnson's house leading to her arrest.

Under current California law, Casey may face up to one year in jail or a state prison sentence ranging from 16 months to three years.

No word yet on whether the house of baby powder will come to the 30-year-old's rescue. Casey is currently being held in a Van Nuys jail cell under $20,000 bail.

Chances are they're not exactly the posh digs of which she's accustomed.

Not every heiress is a hot mess. This style icon from the Guinness family collaborated with Comme Des Garçons on her new scent.