Demi Lovato Checks Into Treatment Center, Quits Jonas Tour
The Jonas Brothers perform at Shoreline Amphitheatre on September 18, 2010 in Mountain View, California.

The Jonas Brothers and Demi Lovato launched San Francisco's Shoreline Amphitheatre into a "Camp Rock 2" frenzy on Saturday (Sept. 18) -- with the help of "Camp Rock" friends like Mdot and J, of course -- and Billboard.com was on hand to capture the action.

PHOTOS: JONAS BROTHERS, DEMI LOVATO PLAY SAN FRANCISCO

The Brothers and Lovato kicked off their tour Aug. 7 and wrap on Nov. 8, hot on the heels of the second "Camp Rock" movie. Back in August, Billboard.com got an exclusive backstage look at the tour's opening night near Chicago, led by none other than Joe Jonas.


Video: Billboard.com's backstage tour with Joe Jonas

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