All about Noah CyrusNoah Cyrus is Miley Cyrus's little sister. Noah is seven years old. Her full name is Noah Linsdey Cyrus. Noah has acted in episodes of Hannah Montana. Noah was born on January 8, 2000. She is an American Actress. Noah has starred in six episodes of Doc, as Gracie Hebert, she guest starred in The Emperor's New School. Noah is the youngest sister of Miley Cyrus and the youngest child of country singer Billy Ray Cyrus and his wife, Leticia 'Tish' Cyrus. Cyrus has an older brother Braison and sister Miley, who is a singer. Along with two older half-brothers Trace and Christopher Cody and an older half-sister Brandi who is a guitarist and back up singer in Miley's (Hannah Montana's) band.