Miley Cyrus has admitted she was "evil" to Hailey Bieber when they were children.
The singer appeared on the latest episode of Carpool Karaoke where she joined Kendall Jenner and Hailey Bieber in a sing-along of her hit 'Party In The USA'.
The pair revealed that they've known each other a long time with Cyrus admitting she used to be "evil" to Bieber.
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Miley explained that she used to play with Hailey's older sister Alaia when they were just 11 years old.
"[Hailey] would try to play with us, like me and Alaia, and then we would lock her out of the room and be evil."
"I had to. It made you who you are, you know? It made you stronger. Now you can always take like the trolls and sh*t. 'Cause I was such a troll."
Hailey responded, "Miley was the biggest troll to me. She prepared me for this industry!"
Who would have thought Hannah Montana could be mean!