New York, March 1: Waiting to watch ‘Jonas Brothers: The 3D Concert Experience’, fans got a huge surprise on Saturday as they got to see the pop-rock band not only in 3-D, but also in flesh.

To promote their latest movie, the trio has been making surprise visits at various movie theaters across the nation, as part of the Jonas Brothers' whirlwind Surprise Theater Invasion.

Though the band has a huge fan base, this traveling endeavor might just buy them some more audience for their first big-screen movie, a quasi-documentary that follows them on tour.

When Nick, Joe and Kevin walked in at the Palisades Mall in Nyack, New York on Saturday morning, the mass hysteria was inevitable. Tears flowed by gallons and the screams almost reached a deafening level.

It seemed to be the moment of a lifetime for many teenaged girls, who were busy brushing their hair, giving a final touch-up to their made-up faces and screaming at the top of their voices to ensure a perfect salutation for the Jonas Brothers.

"Fix your hair! They're here!" 15-year-old Courtney Yearick told her friends as bunches of girls marveled over hundreds of news cameras.

One little girl, barely of seven, stood watching all the frenzy in amazement. Some celebrity was visiting, she knew, but was not quite sure. "They said Hannah Montana might appear!" she said innocently.

The boys had not prepared long speeches (after all, people were there to watch the movie); they just thanked the fans for the response and said they hoped the audience will enjoy the movie.

The Jonas Brothers seemed a little nostalgic at the Palisades Center, as they had visited it frequently during their growing up days.

The boys were raised in nearby Wyckoff, N.J. and the West Nyack appearance was something of a homecoming, said Nick Jonas, at a news conference. “The fact that we're coming back here is really, really, really cool," he said.

The promotion strategies worked well and the movie came out on top, raking in $4.8 million at its opening, fueling the anticipation of a $20 million weekend.