Billy Ray: Miley is still herself
The former Hannah Montana star has been criticised for her saucy display at the event, where she twerked at Robin Thicke while wearing a skimpy nude latex bikini and touching herself with a giant foam finger.
But her dad Billy Ray Cyrus told Piers Morgan on his CNN show that she is still "my Miley".
He said: "She's an artist. She's real. I think that what's happened over the years, Miley has been reinventing her sound. She's evolving as an artist herself. I think that all of what everyone is calling controversy now, that's still my Miley."
He went on: "Miley's smart enough to know that to come out of the shadows of Hannah Montana it really takes something extremely drastic, which when you go to that level, it creates passion, and passion is either love or hate. But there's no middle of the road for passion.
"She has risen to a whole new level. I thought I had seen it all - until these last couple of weeks."