LONDON: Teen superstar Miley Cyrus’ protective father has banned her from going under the knife to alter her looks.

The 16-year-old Hannah Montana star reveals that her father Billy Ray has laid down strict ground rules about altering her looks in any shape or form in the future, reported imdb.com.

“My dad won’t let me fix my teeth or cut my hair. He loves it. He’s like, ‘It’s you,’ said Cyrus.