Miley Cyrus admits smoking a legal high was a 'bad decision'

Miley Cyrus has admitted she made a 'bad decision' in smoking a legal high.

The 18-year-old singer-and-actress was blasted last year when video footage was leaked of her inhaling a substance called salvia through a 'bong' device, and the 'Hannah Montana' star admits her position in the public eye means she should never have tried the hallucinogen.

After it is commented on that other teenagers experiment with legal highs, she told America's Marie Claire magazine: "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."

Miley's parents Tish and Billy Ray split up last October after 17 years of marriage and the 'Last Song' star admits it has been tough to cope with, though she remains optimistic she will stay close to family, including sister Noah, 10, brother Braison 16, and stepsiblings Trace, 21, Brandi, 23, and Christopher, 18.

She 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."

In order to deal with her parents' split, Miley threw herself into work and was delighted to forge a close bond with her 'LOL' co-star Demi Moore.

She said: "It really felt like Demi was my mom a little bit because we had such great conversations, and I feel like it shows on-screen. I can't wait for 'LOL' to come out. It's what I'm most proud of."