Miley Cyrus has appeared on Jay Leno's Tonight show ahead of her Bangerz tour.

And the pop star, famed for her tendency to twerk, clearly made a strong impression on the NBC host, who turned up dressed in head to toe denim imitating Cyrus.

Miley tweeted the pic with the message: "Jay Leno swag watch me tonight talk about #bangerztour."

And the 21-year-old who isn't shy about speaking her mind at the best of times, chimed in with some good advice for Justin Bieber.

The Canadian pop idol was arrested last week after allegedly assaulting his limo driver and is already facing a DUI.

"You've got a lot of money," said Cyrus. "Pay people to make sure you don't get in trouble, and party at your house. Buy a house, and add a club to it.'

The former Disney star, who is constantly hitting the headlines for her provocative videos and performances, said that she has never had to contend with the long arm of the law.

"You know it's funny cos today I was looking, my fans had put all these mugshots up and they were like, 'I don't see a Miley mugshot yet."

"I get the most flack from anybody but I don't do anything illegal," she added.

"I'm doing a lot of s**t, but I'm not doing anything illegal – so that's alright. Everything I do is legal in California."

The Wrecking Ball singer revealed that her mother Tish was not impressed with her tendency to stick her tongue out for the cameras.

But as she explained it's a default reaction borne of embarrassment. "It's because I don't like getting my picture taken, I kind of get embarrassed.

"You don't see it, on the red carpet the people taking your pictures are yelling at you and it gets you a little nervous. They're screaming. I don't know what to do so I just stick my tongue out because I don't know what else to do."

Referring to her recent photograph with Madonna who joined Cyrus on her MTV Unplugged set, she added: "People are doing it, Madonna's doing it. It's all good."

Cyrus's recent antics have prompted stars like Sinead O' Connor and Kate WInslet to publicly express their concerns for her well-being.