The pop star’s comments are published just days after she was voted the celebrity with the worst influence on teens in a survey of youngsters for the second year in a row.
A video of the 18-year-old smoking a bong allegedly filled with the herb salvia was posted on the Internet in December.
Speaking about the incident Cyrus tells U.S. Marie Claire: ‘I’m not perfect…I made a mistake…I’m disappointed in myself for disappointing my fans…’
When it is suggested that her actions were no different to thousands of American 18-year-olds who smoke bongs, the Disney star says: ‘But they’re not Miley Cyrus. They’re not role models.
‘So for me it was a bad decision, because of my fans and because of what I stand for.’
The former Hannah Montana star seems to be very concerned about what her fans think of her, especially when it comes to her music.
The singer has been heavily criticised for filming raunchy pop videos for her last album, Can’t Be Tamed.
But she says: ‘What I never wanted was for my fans to ever feel like I betrayed them…to feel like I said I was something then turned around and was something that I’m not.
‘But I’ve never, ever claimed to be perfect.
‘I mean, since I’ve started the show, I’ve always said: ‘I’m gonna make mistakes’. I know this.
‘And I think that that is one of the reasons why people related to me. Why kids related to me.’
Cyrus also slams rumours that she was caught kissing actor Avan Jogia in a photo taken at her 18th birthday party last year.
She says: ‘If you look at the picture, I’m turned away, and he’s kissing me on the cheek.
‘It’s very hilarious to me that people say: ‘They’re making out’. In making out, there’s a tongue.’
Cyrus also speaks out about her parents pending divorce. Last year her father, country singer Billy Ray Cyrus split from her mother Tish.
The pop star said: ‘Of course anyone is going to be upset when there are troubles in their family, but I have a lot of hope in our family and, no matter what happens, we’re gonna stay strong.
‘I just want my mum to be happy and my dad to be happy and, most of all, my little sister to be happy.’
Outside of her family unit she reveals that she has found her own role models in Hollywood including Demi Moore with whom she filmed the upcoming movie LOL.
‘It really felt like Demi was my mum because we had such great conversations and I feel like it shows onscreen,’ she said about the actress, whom she reportedly talks to and texts almost daily.
‘I can’t wait for LOL to come out. It’s what I’m most proud of.’
In the meantime the teen that made an estimated $48 million in 2010 reveals that she is frugal.
She said: ‘I’m very careful about the things I buy, because a year from now, I know I’m gonna look at a thing that I spent 30 grand on and say: ‘What the heck was I thinking? I don’t want a diamond skull,”
In the immediate future Cyrus says that she would like to do more charity work, including serving as a missionary in Indonesia building wells and bringing water to people who need it.
She says: ‘Honestly, I cannot sleep at night because I get so excited about doing good things for the world, changing the world.’