Miley Cyrus' big brother has spoken of his concern for his  scandal-prone sister.

18-year-old Trace Cyrus admits that he and father, Billy Ray, worry how the Hannah Montana star will cope with the criticism levelled at her over her series of age-inappropriate pics.

He says, "She has a lot on her plate for a 15-year-old girl. I hope the public isn't too hard on her.

"My father and I can take it but for a girl like Miley it's so hard when stuff like that happens to her."

Meanwhile, Miley's email hacker struck again over the weekend, leaking another selection of provocative snaps.

And he promises there's more to come...