The name actually stems from a childhood nickname where her family always called her "Smiley." That became Miley, and she's chosen Ray as her new middle name in honor of her dad, Billy Ray Cyrus.
'Hannah Montana' gets a name change
(KABC) She was born with the name Destiny Hope Cyrus, and is also known as her singing and dancing fictional alter ego, "Hannah Montana." But now she is legally and officially Miley Ray Cyrus.
