It took her six months, but Lindsay Lohan has finally fired back a response to the Betty Ford worker who claims LiLo assaulted her -- and to no one's surprise ... Lindsay is pinning all the blame on her. 

Lindsay allegedly got into it with Dawn Holland (now going by Dawn Bradley) back in December 2010, while Lindsay was in rehab. Bradley filed a lawsuit last July against Lohan for the alleged incident, claiming assault and battery.

Attorneys for Lindsay filed their response in Riverside County Superior Court on January 10, claiming the entire incident was provoked by Bradley ... so Lindsay shouldn't have to pay her a cent. Lohan claims anything she may have done was done in self-defense.

Lohan also wants the court to force Bradley to pay for her court costs, plus any other relief the court sees fit.

Cops were called to the Las Vegas home of Flavor Flav early this morning after a family spat turned violent -- and when cops sorted it out, one of his daughters was arrested. 

Law enforcement sources tell TMZ ... Flav's 19-year-old daughter Dazayna got into an argument with one his step-sons, which eventually became physical. 

We're told Flav tried to break it up and got hit by his daughter for his troubles. It's unclear whether it was on purpose or by accident. 

Our sources say someone in the house called the cops. When police arrived, we're told they interviewed everyone and found evidence of domestic violence. Dazayna was eventually taken in for misdemeanor battery.

Dazayna is still in custody and will go before a judge tomorrow morning.

Nick Stahl found himself a little short on cash Friday night when his cab driver told him his bill was $84 ... so then Nick Stahl found himself arrested, TMZ has learned. 

Law enforcement sources tell TMZ ... when Stahl arrived at his destination, he told the cab driver he just didn't have the cash or credit to pay the fare. We're told the cabbie then flagged down a nearby officer, and Nick was arrested. 

Stahl was booked at 8:52 AM on Friday and was not released until 3:42 PM the next day, after posting $500 bail.

Calls to Shahl's rep were not returned.

The L.A. City Attorney recommended that all references to whip-its be redacted from the Demi Moore 911 tape -- and the recommendation was followed ... TMZ has learned.

Sources tell us ... the Deputy City Attorney assigned to the case heard references to whip-its and felt it would be an invasion of privacy if that information was released to the public -- so it was cut out of the tape, along with specific references to other drugs.

TMZ broke the story ... paramedics on scene were told Demi had used whip-its to inhale nitrous oxide just before she lapsed into semi-consciousness and exhibited seizure-like symptoms.

Now we know the person who called 911 also told the dispatcher about the whip-its.

Bow Wow needs to hire himself a new accountant -- because not only does he have a tax lien against him for unpaid taxes from 2006 ... but now it turns out he owes back taxes from 2008 and 2010 as well!

As TMZ first reported, a tax lien in Florida for the year 2006 put Bow Wow on the hook for $91,105.61. The lien has still not been paid off.

Now a new lien was filed on January 9, this time in Georgia, saying Bow Wow owes $15, 279.62 for unpaid taxes from 2008 and another $19.700.91 for 2010.

Put it all together ... and you've got $126,086.14.

Calls to Bow Wow's rep were not returned.

With all the celebs in crisis -- the latest of course being Demi Moore and Heather Locklear -- we started to wonder how the life of a celebrity stacks up with yours.  Is it better?  Worse?

So we gotta ask ...

Jennifer Lopez and Marc Anthony have found the secret to getting along -- splitting up.

Sources very close to the former couple tell TMZ ... months before the breakup, there was virtual radio silence between the two.  We're told when they did talk, it was loud and contentious ... often ending in tears on Jennifer's part.

But since the split, we're told their bond has materially strengthened.  They are communicating and co-parenting well and not fighting at all.

We're told they're actually happy to do joint appearances for their new show, as well as charity work.

Sources say a number of people around them are saying there are signs of a possible reconciliation, although it is by no means certain.

Baby Lyssa Chapman says she has a good reason for highly-publicized arrest last year -- and she plans on revealing that and more in a new memoir about the family ... TMZ has learned.

Baby Lyssa's arrest was a big deal when it happened last March -- and a big part of a recent episode of "Dog the Bounty Hunter." Sources close to Lyssa tell TMZ in her planned memoir, she'll reveal she was drugged on the night in question.

According to our sources ... Lyssa, who has had substance abuse issues in the past but has clean and sober for years, even visited a doctor in the months after her arrest who deemed she did not have a substance abuse order.

We're told the book -- which is being repped by Martin Literary Management -- will also detail problems with Leland and Duane Lee. According to our sources, they've left the bail bond business and severed ties with the rest of the family ... putting next season of the show in jeopardy.

Our sources say the production company behind the show have even sent the two a letter demanding their return to production or face being kicked off the show for good.

Calls to A&E have not been returned.

A member of the condo board that Nick Santino said pressured him to euthanize his pit-bull -- a decision that drove him to suicide -- says the condo board is NOT responsible for his death.

Board member Marilyn Fireman says she is sorry that Santino is dead, but says it has nothing to do with the building's no-pet policy. She tells the NY Post, "You just assumed that [his suicide] was a result of a board’s decision."

Fireman did concede Santino routinely complained about the building’s anti-dog policies.

Santino's sister tells the paper the family is holding off on funeral arrangements until the dead dog's ashes are brought home ... saying, "They'll be buried together."

Santino had his beloved and healthy pit-bull Rocco put to sleep on Tuesday, Santino's 47th birthday. A few hours later, he overdosed on pills.

Give the following photos some extra special attention -- 'cause there are some super sneaky differences just waiting to be spotted!

**HINT -- There are THREE differences in the above photographs!**

Former "Bachelor" winner Shayne Lamas believes in starting 'em off young -- because TMZ has learned she's close to signing her 11-week-old daughter to an endorsement deal. 

Sources close to Lamas tell TMZ she is set to ink a six-figure deal for little Press Dahl Lamas-Richie with a company called Sugar Factory ... to be the face of their baby clothing line. 

We're told little Press is even in line for her own signature series "couture pop" ... like Britney Spears has.

Your move, Blue Ivy.

Here's "Sex and the City" star Cynthia Nixon with her newly shaved head for her role in the Broadway play "Wit" in NYC on Tuesday (left) -- and embattled bald icon singer Sinead O'Connor in L.A. a few weeks ago (right).

 Question is ...

"American Idol" cheerleader babe Brittany Kerr is more than a pretty face -- she's a pretty face with a black belt in taekwondo!

Brittany tells TMZ she started studying martial arts in Charlotte when she was 8 (above) -- and earned her black belt after 4 years of kicking girls' and boys' butts. Brit says, "I definitely made some boys cry while sparring ... I had a killer high kick!"

Kerr is now 24 and says she's laid off the taekwondo, but still does some kick boxing to stay in shape.

Steven and Randy ... you've been warned.