DISNEY STAR DEMI LOVATO DROPS OUT OF THE JONAS BROTHERS TOUR & CHECKS INTO REHAB!

Disney Channel darling Demi Lovato has dropped out of her Jonas Brothers tour gig and checked into rehab.

The 18-year-old star of the Disney Channel series "Sonny With a Chance" and the "Camp Rock" movies sought treatment for an eating disorder and cutting herself, a source told The Associated Press Monday night.

"Demi Lovato left her tour early this weekend in order to seek medical treatment for emotional and physical issues she has dealt with for some time," her representative said in a statement.

Lovato launched her tour with the Jonas Brothers in July in her hometown, Dallas. The exhaustive, 45-date tour throughout the U.S., Europe and Latin America includes a performance Tuesday night in Buenos Aires.

The tour coincided with the September debut on the Disney Channel of "Camp Rock 2: The Final Jam."

"[Demi] regrets not being able to finish her tour but is looking forward to getting back to work in the near future," her representative said.

Disney Channel officials had no immediate comment.

Lovato said in an interview last year that she was bullied so badly in middle school that she left and turned to home schooling.

"She fought through eating disorders and has struggled with cutting [herself]. . . . Demi is taking control by getting help," a family source told People magazine.

In December 2008, Lovato's reps denied she was intentionally cutting herself after she prompted speculation by showing up at Miley Cyrus' birthday bath sporting red marks on her inner wrist.

Citing unnamed sources, TMZ.com reported that Lovato's "catalyst" for seeking professional help was a physical altercation she got into with a female member of the concert tour.

Lovato usually updates her legion of fans on Twitter, but she deleted her account Oct. 30.

Lovato began her entertainment career at age 7 as a regular cast member on "Barney & Friends." She joined the Disney Channel in 2007, playing the role of Charlotte Adams in the series "As the Bell Rings."

A gifted singer, Lovato has recorded three albums, including "Here We Go Again," which debuted atop the Billboard 200 in July 2009.

In May, her brief romance with Joe Jonas, 21, ended in heartbreak.

"I learned my lesson. It's not very much fun when you break up in a public relationship. So, maybe next time keep a secret," she said in an interview.