Miley Cyrus and alter-ego Hannah Montana have double-teamed their way to another No. 1 box office debut. Walt Disney's “Hannah Montana: The Movie” opened with $34 million in ticket sales, according to studio estimates Sunday. That followed Cyrus' first-place premiere last year with her 3-D concert film. The movie is a big-screen installment of the Disney Channel series about an ordinary teen living a double life as pop star Hannah. “Hannah Montana” drew $17.3 million on Friday for the biggest opening day ever for a G-rated live-action movie. While girls 12 and younger and their moms made up most of the audience, “Hannah Montana” also attracted a solid crowd of teenage girls, fans reaching the age when they might be outgrowing the show, said Mark Zoradi, president of Disney's motion-picture group. “Miley's audience stayed with her,” Zoradi said. “Those that enjoyed the show on TV and maybe have become young teens themselves came back for the movie.” At just 16, Cyrus already has an enviable box office history as she moves from TV to the big screen. “Hannah Montana and amp; Miley Cyrus: Best of Both Worlds Concert” put in a $31.1 million debut, while her animated comedy “Bolt” opened with $26.2 million last fall and became a $100 million hit.