The Jonas Brothers Heart Their Little Brother
Frankie was there to premiere the new Disney movie Ponyo, which hits theaters August 14th.
In the animated movie, Frankie plays Sosuke and Noie Cyrus (yup, that's Miley Cyrus' little sister!) plays Ponyo.
The film is based on the story of The Little Mermaid. Have you heard about this movie? Will you go and see it?
For more pics of the Jonas Brothers at the movie, click here.