Celebrity photographer David LaChapelle attacked Jessica and Ashley Simpson, branding them as "lip-synching television stars".

LaChapelle, who directed Christina Aguilera's 'Dirrty' video declared the sexy singers are everything that's wrong with music and that they are everything wrong with culture and art, in one family.

He ranted to America's New York Daily News newspaper: "They're everything that's wrong with music, they're everything wrong with culture, and everything wrong with art - in one family!

"They're nothing. They have nothing. They hold no interest whatsoever for anybody. They're reality-red-carpet, lip-synching television stars. I don't think they offer anything."

It appears David has a grudge on them after the singers refused to pose him for the Rolling Stone magazine. But the photographer denied rumors, saying he only wanted to picture them because he's a close friend with the publication and was doing them a favor.

He sniped: "I was only doing it because of my relationship with Rolling Stone. We were going to try and make the Simpsons look cool. I realize now that is an impossible task."