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OTRC: Miley Cyrus says she's a 'stoner' during birthday celebration, Kelly Osbourne claims she's joking - See video

Miley Cyrus appears in a scene from the 2009 music video 'Party in the U.S.A.' (Hollywood Records)

Miley Cyrus might be facing another controversy after a video of the former Disney star surfaced on Sunday, November 27, which featured the singer and actress referring to herself as a "stoner." However, friend Kelly Osbourne claims the incident is just a "joke" amongst friends.

In the video, which can be seen below and was obtained by The Daily, Cyrus is seen speaking at her 19th birthday party at the Hollywood Roosevelt Hotel. The date the video was shot is not given but Cyrus turned 19 on November 23.

Cyrus is presented with a birthday cake from friend Kelly Osbourne. Osborne, daughter of rocker Ozzy Osbourne, stars with Cyrus in the upcoming film "So Undercover." The cake featured the image of Bob Marley, who was an advocate of cannabis due to his Rastafarian beliefs.

"You know you're a stoner when your friends make you a Bob Miley cake," Cyrus tells the crowd. "You know you know you smoke way too much [expletive] weed."

Osbourne then grabs her microphone and replies, "I thought salvia was your problem, Miley."

Osbourne was referring to Cyrus' controversy last year, where she was caught on video smoking the hallucinogenic herb salvia out of a bong. That video was reportedly shot days after her 18th birthday.

The 19-year-old pop singer and former star of the Disney Channel show "Hannah Montana" is also seen swearing and laughing in the clip, which was published on the website TMZ in December 2010. Salvia is legal in California

"I'm not perfect," Cyrus told Marie Claire magazine in an interview published in its March 2011 issue. "I made a mistake. I'm disappointed in myself for disappointing my fans. So for me it was a bad decision, because of my fans and because of what I stand for."

Osbourne once again defended the singer on her Twitter page on Sunday, November 27 after the recent video was published.

"Let me make something very clear after @MileyCyrus salvia incident we started calling her bob miley as a JOKE! the cake was also A JOKE! it makes me sick that @MileyCyrus so called 'friends' would sell her out and lead people 2 believe she is someone that she is not," Osborne wrote in two Tweets.

"U guys if @MileyCyrus is not recording/filming/touring she is works everyday how could she possible do all that if she was a stoner! #think," she added.

Cyrus has stayed quiet about the issue. Earlier this month she signed on to voice Adam Sandler's teenage vampire daughter Mavis in Sony Pictures Animation's 3D film "Hotel Transylvania."

The cast also includes Kevin James and Fran Drescher, who will portray Frankenstein and the bride of Frankenstein, respectively. Cee Lo Green, Steve Buscemi, Molly Shannon and David Spade will also lend their voices to the monster flick.

Cyrus is also famous for pop songs such as "Can't Be Tamed" and "Party in the U.S.A."

She began her acting career when she was 8-year-old and rose to fame with her role on "Hannah Montana," which ended earlier this year after four seasons.

Cyrus said last year she had outgrown "Hannah Montana" and began raising eyebrows when she showcased a more mature image in performances and music videos.

See the video in question below.

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