Disney's Ponyo

Miley Cyrus helps her lil sis Noah promote her upcoming flick, Ponyo.

Noah, 9, voices the title character in the animated feature. Ponyo, also starring Frankie Jonas, tells the sea-bound tale of a goldfish princess who wants to be human and gets her wish, befriending a 5 year-old boy (Jonas) on the journey.

Ponyo will premiere in limited theaters on Friday, August 14th. Check out a sneak peek below!