As if there wasn't enough beef between Demi Moore's clan and web gossip supremo Perez Hilton already, a new Twitter row has erupted between the pair of them.

The barney blew up when Moore spotted a link on his site to pictures that reportedly showed her 15-year-old daughter showing her chest in a revealing top - and she accused Hilton of flouting child pornography laws and threatened to sue.

Tweeting on the subject, she said: "Clearly Perez Hilton isn't taking violating child pornography laws very seriously. He might not but there are alot of people who do!"

And then escalates things with: "Anyone who advertises follows or supports Perez supports violating child pornography laws!"

Before giving a bit of context by saying: "Let me ask all of you, what is it called when someone is telling people to look and focus on a child's "boobs & ass" while providing photos?"

But Hilton was robust in his defence, pointing the finger straight back at Moore by Tweeting "thanks for drawing MORE attention to your daughter's behavior and your parenting skills (or lack thereof). U r real smart!"

He later added: "I would not let my 15 year old daughter dress like that under ANY context. You are delusional and slightly senile!"

The picture above is of Demi with elder daughter Rumer, 21, but we won't be showing you the snaps of Tallulah concerned.

Threats of legal action are being bandied about on both sides, so this one looks set to run and run.

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