Allegedly, Party Girl Miley Cyrus was having a Pot Smoking Night

Miley Cyrus confesses that she smokes 'too much weed' when given a Bob Marley birthday cake

Birthday girl: Miley Cyrus celebrated turning 19 at the Beacher's Madhouse club at the Roosevelt Hotel in Hollywood, with friend Rumer Willis, right

Miley Cyrus made a startling confession at her 19th birthday party last week.

The performer called herself a 'stoner' and a 'pothead' as she was presented with a Bob Marley cake.

Miley addressed the crowd when given the cake and appeared to admit that she was a heavy marijuana user.

Scroll down for video

Revelation: Miley Cyrus was captured on video at her 19th birthday party organised by Kelly Osbourne last week, appearing to claim she was a stoner

Themed gift: Miley was presented with a Bob Marley cake by her friends and said it was because she smoked 'way too much f**king weed'

'You know you're a stoner when your friends make you a Bob Marley cake,' the former Disney starlet said in video obtained by The Daily. 'You know you smoke way too much f**king weed!'

The bash was held at Beacher's Madhouse inside the Roosevelt Hotel in Los Angeles on Tuesday which was hosted by her friend Kelly Osbourne, 27.

The Fashion Police host responded to Miley's comments by laughing, 'I thought salvia was your problem!'

She's smoking something: Miley was captured smoking a bong last year but denied it was marijuana and claimed it was the legal hallucinogen salvia

Drug jokes: Kelly Osbourne added with a laugh that she thought Miley's problem was with salvia

Kelly was alluding to the incident in 2010 when Miley was captured on camera smoking out of a bong which she denied at the time was marijuana.

She instead claimed that she was smoking the legal hallucinogen, salvia.

However, her rep insisted Miley was joking: 'It's all been taken out of context. The cake was a joke and Miley's response was intended to be sarcastic.'

Kelly later took to her Twitter page to defend Miley, saying that it was all a joke.

Defence: Kelly later took to her Twitter page to say that their talk about smoking marijuana was all a joke

'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,' she wrote.

'It makes me sick that @Miley Cyrus so called 'friends' would sell her out and lead people 2 believe she is someone that she is not!

'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.' (sic)

Miley rarely needs an excuse to let her hair down but her last year as a teen proved a prime opportunity to party as she mingled with a gaggle of showbiz friends.

Dancing queen: The singer and actress is seen here putting in some moves with a dwarf, who is wearing a green curly wig

The guestlist included her boyfriend Liam Hemsworth, Kelly Osbourne - who organised the bash - Rumer Willis and Victoria Justice.

Parents Tish and Billy Ray were also in attendance at the event, where entertainment included dancing dwarves and a performance of Super Bass by a mini Nicki Minaj impersonator.

One picture shows Miley blowing out the candles on a huge birthday cake, while other shots capture the actress dancing away.

Bringing the house down: A mini Nicki Minaj impersonator performed a rendition of Super Bass

Great night: The event was organised by Kelly Osbourne and Miley excitedly tweeted her thanks to her friend

Miley thanked her friend Kelly in a tweet for organising the bash.

'Can’t thank @MissKellyO for the best partyyyy ever! =]]]] i loveeeee you!'

She added: 'Let’s just say there was a unicorn in the lobby,' describing how a horse with a horn attached to its head was brought into the party.

Cool cat: Miley flashes a peace sign as she gets into the party spirit with a friend

Other attendees included her half sister Brandi, sisters AJ and Aly Michalka, and Heroes actor Justin Baldoni.

Ahead of the birthday party, Kelly told E! about what she had planned.

'It’s intimate, but it’s going to be the sickest [party] she’s ever seen in her life,' she teased.

'Although I see her on the same level mentally as me, I also realise that Miley’s 19 and she deserves to still have fun,' she went on.

'Because that girl has so much pressure on her and has worked her ass off her entire life that I think a lot of the time people forget that she deserves to have fun too.

'So that was my mission for her, to make her birthday…the best day ever… I’ve got all sorts of madness and craziness.'