Demi Lovato is standing up for girls everywhere!

Is Demi Lovato Dating Niall Horan of One Direction? [PHOTO]

When Star Magazine posted a picture of the stylish Kate Middleton with an “expanding waistline” reporting she was pregnant, Demi took to Twitter to give her opinion.

The cover of the magazine stated that the Dutchess herself was preggers with Prince William‘s baby. The former Disney star tweeted, “So apparently Kate Middleton is pregnant because of THIS picture… Are you KIDDING me?!!”

Have Wilmer Valderrama and Demi Lovato Rekindled Their Romance?

And she didn’t stop there. After showing off the picture, she dropped the mag’s name saying they should be ashamed of this reporting.

And people wonder why girls/guys have body image issues.. Whether she is or not, she still has a beautiful body. Shame on you Star magazine.

— demetria lovato (@ddlovato) September 11, 2012