Olivia Bentley faces being axed from Made In Chelsea after a video emerged of her allegedly snorting white powder.
In the clip, the 21-year-old brags about her glamorous life, while sitting around with pals.
She can then be seen sniffing a line of a substance on the table in front of her.
Olivia tells the party guests: "I'm on a TV show so people write s*** all the time. I quite like reading the articles."
A witness claimed to The Sun: "She brazenly sat there doing drugs in front of a roomful of people.
"She comes across as a bit of a goody two shoes, so I couldn’t believe it."
As the clip continues, once Olivia has finished apparently snorting the powder, she licks her finger to pick up more from the table.
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The party was apparently still going at 10am.
The source continued: "There were about 30 people there. Because it was in Chelsea, her stomping ground, she knew most of them.
"But there were people she didn’t know. I was shocked she’d do drugs in front of them.
“She’ll regret it if she is booted off the show.”
If the former public school pupil was snorting the Class A drug cocaine, her days could well be numbered on TV.
On TOWIE, James Argent was suspended and Mario Falcone was banned after they were both caught snorting cocaine.