Miley Cyrus has revealed that Katy Perry managed to fulfil her sister's dream of meeting One Direction - not her.

The siblings saw the band in concert together but the 'Party In The USA' singer wouldn't give up her access all areas pass to her 12-year-old sister Noah.

However, Katy Perry soon saved the day and took her backstage. Miley Cyrus said:

"I left and I went, 'Noah, you cannot take my all access pass; you have to stay up in the seats and just chill'. But then Katy Perry comes down and is like, 'You wanna meet One Direction? That's totally fine!'."

She continued: "I'm like, 'Ok, I'm leaving...I'll leave Noah with Katy Perry'. Bad idea. I see all these photos online...so Noah finally got to meet One Direction, thanks to Katy. No thanks to me."

Cyrus added that she also went on a US chat show just so that her sister could meet Justin Bieber. The 'Fly On The Wall' star said:

"I flew this girl to Good Morning America and I did Good Morning America only so she could meet Justin Bieber. I had nothing to talk about. My mum's like, 'You've gotta do it, Justin's on that day!'."