The 28-year-old half-sister of the singer has criticised those who make fun of her controversial younger sibling, 22, reported Female First.
"I don't know why people like to tear others down to make themselves feel better. I don't know what it is but, yes, Miley is a huge personality. She's a weirdo, but she's so normal."
Brandi, who also has siblings Noah, 15, Trace, 26, Braison, 21, and Christopher, 23, said she was often teased about her family as a youngster though, as other kids used to make fun of her 'Achy Breaky Heart' singer dad Billy Ray Cyrus.
"I was like, 'Wait a minute. My dad is the biggest star on the planet and you want to make fun of me?' As I'm older now, I look back on that and that's just so insane.