Demi Lovato Teams Up With 'fat' Kardashians to combat Obesity ?

Demi Lovato Teams Up With the Kardashians to Fight Bullying

Demi Lovato at LAX Actress Demi Lovato arrives at LAX airport to catch a flight out of Los Angeles. (FlynetPictures.com)more pics » Demi Lovato (FlynetPictures.com) Demi Lovato is one of many stars to speak out against bullying in recent months, talking candidly about the experiences that were so terrible, she ended up begging her mother to let her be homeschooled.

Now, Lovato and some of her closest friends have teamed up for the cause once again, this time on an upcoming episode of Extreme Makeover: Home Edition.

On the episode that airs Sunday, Khloe, Kim, and Kourtney kardashian visit the family of Carl Joseph-Walker, an 11-year-old who committed suicide after being bullied. Not only do the Walkers get a new home, they also get an anti-bullying rally in Carl Joseph's name, with a special performance by Demi Lovato.

Will you tune in to watch Demi sing?