In one of the most bizarre stories I have ever heard, Casey Johnson is not only accused of stealing a close pal’s jewelry and underwear while she was away, but apparently masturbated in her bed and left behind a dirty vibrator. You can’t make this stuff up.

Casey Johnson, the daughter of philanthropist Robert Wood “Woody” Johnson IV, was arrested in Los Angeles on grand-theft charges after reportedly burglarizing the home of Jasmine Lennard, a former contestant on Britain’s Make Me a Supermodel who claims she had taken the troubled heiress under her wing only to return home one recent night to find that Johnson had helped herself to her jewelry, clothes, and underwear.

Adding insult to injury, she claims Johnson left a used vibrator on her bed and a wet towel on the floor.

Jasmine Lennard & Casey Johnson

Jasmine Lennard returned to Los Angeles after a month with family in London to find her new home had been broken into and ransacked. Among the items stolen from her apartment in West Hollywood were jewelry, Christian Louboutin shoes, 20 Herve Leger dresses, 600 pages of a legal document and various items of underwear.

But what made it truly shocking was that the thief had apparently left an unsavory calling card – in her bed, Jasmine found a used vibrator, apparently left behind by the thief.

Semel & Johnson

Twelve days later, Jasmine, 24, got an even greater shock after a text message arrived from friend, Courtenay Semel – daughter of internet firm Yahoo!’s ex-chairman Terry Semel – which read: ‘There’s a problem, Jaz. Casey Johnson just got into bed with me and she is wearing your underwear. Call the police.’ Casey Johnson was arrested for grand theft after police in Los Angeles searched her home and found all of Jasmine’s belongings. She is now out of jail and free on $20,000 bail.

Now, Casey Johnson is claiming innocence and pleading with Jasmine Lennard to drop charges against her. Johnson denied to Page Six that she ransacked and robbed Lennard’s Hollywood home. Johnson was arrested for grand theft. “Everything she has said is 100 percent fabrication. It’s not true. I’ve had a rough time. I’ve just got out of jail.” She added she was meeting last night with powerhouse lawyer Robert Shapiro and a crisis manager. Johnson added, “It is a very serious thing she is charging me with, so I am not going to mess it up by telling my side — as much as I’d love to. But the truth is far different that what Jasmine Lennard has said.”

Jasmine claims she had been trying to help Casey, 30, tone down her wild lifestyle. ‘I tried to get her off drugs and alcohol. I tried to get her into a 12-step program. I tried to help take care of her daughter and gave her money,’ says Jasmine.

‘I am the only person who helped this girl. I believe she was obsessed with me and thinks in her mind we had some kind of affair. That is not the case.

‘She breaks into my apartment, gets into my bed, has a shower in my bathroom, then takes everything.’