Brad Pitt can last for days without showering, Jason Priestley claims. The “Beverly Hills, 90210” star shared some savoury secrets in his new memoir, including Brad’s unhygienic dares. And oh, there’s this thing about his co-star Shannen Doherty’s diva moments.

In his upcoming book, “Jason Priestley: A Memoir,” Jason opens up about the time that he had shared an apartment with another still-unknown actor by the name of Brad Pitt.

They are household names now, but back in 1987, they were still struggling actors who had to share an apartment in Los Angeles.

Jason wrote that Brad has been a little competitive back then, winning their little contests with ease.

“Just for fun, we used to have competitions over who could go the longest without showering and shaving,” the former teen drama star explained.

“Brad always won,” he said. “Having to go on an audition meant cleaning up, which is what usually put an end to the streak.”

As for Shannen, who played his twin sister in “90210,” Jason remembered a time when she unleashed her diva attitude during their first encounter in 1990.

The on-screen siblings were sent on a last-minute trip to New York City on a private plane to meet with their show’s advertisers.

“I could not believe my ears at Shannen’s very first words after she boarded. Her butt had barely hit her seat before she said loudly to the PR person, ‘Really? A town car? You send a town car to take me to the airport, not a limo?’ She sighed a very put-upon sign.

“I laughed as I couldn’t tell if Shannen was kidding or not.”

But Shannen didn’t appear to be kidding.

“I looked on, becoming more uneasy by the minute as she began b****ing about the short notice and the food on board and the temperature in the cabin and everything else,” he continued.

Shannen, meanwhile, has hinted that Jason’s memoir may not be as truthful as he claims it to be.

Memoirs are so funny. The truth is rarely told, after all, they are trying to sell a book.

— Shannen Doherty (@DohertyShannen) May 1, 2014

Shannen isn’t the only “Beverly Hills, 90210” co-star who was singled out by Jason.

He also mentioned being a bit ticked by Tori Spelling after he learnt she sold his wedding invite in a yard sale.

“I happened to be at home watching the local news one night, something I rarely got to do. Tori Spelling’s yard sale made the broadcast that night,” he told Us Weekly magazine.

“I saw my very own wedding invitation on the screen,” he said, adding, “Apparently, it had gone for five bucks, including a personal autograph by Tori. She sold my wedding invitation to a stranger.”

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