Dr. Bill Dorfman -- a world famous dentist who treats some of the biggest stars on Earth -- tells TMZ he keeps a "secret stash" of the teeth he's plucked from the mouths of his famous patients ... in the hopes of eventually selling them on eBay.

Dorfman -- who recently treated Lindsay Lohan and whose website features Jessica Simpson, Usher, Ozzy Osbourne, Anne Hathaway and Eva Longoria -- was outside Rock & Brews in El Segundo yesterday when he revealed his secret.

"I actually save famous people's teeth when I pull them ... but I can't tell you [their identities] 'cause it's like patient confidentiality."

He continues, "There have been a few really famous people and I thought one day maybe I could sell this on eBay."

Dorfman insists he always offers the teeth to his patients first ... but they often decline, "So I put it in the back and i just hold on to it."

We've spoken with several dentists who tell us it's not illegal to keep the teeth -- but most dentists either throw them away or give them to dental schools for research purposes.

One dentist told us, "What Dorfman is doing is just sick."



We spoke to Doc Dorfman today on TMZ Live, and he changed his story -- drastically. Check it out ... around the 16-minute mark. 

Jack Osbourne's adorable bulldog Lola -- who famously tore up couches and peed all over the place on the family's MTV reality show -- has died at the age of 12.

Lola wasn't just a reality star ... she was a Twitter sensation as well, racking up more than 8,800 followers.

Jack broke the news a few hours ago ... tweeting, "Thank you all for the kind words about @PrincessLolaO it's nice to know she was loved by so many people."

He added, "Lola you were the best friend anyone could ever have. I will love you and miss you always. RIP @PrincessLolaO 00-12."

Lola's Twitter page was also updated with a message ... reading, "Thank you ALL for your kind words. I'm in a better place now. Heaven needs a new princess : )"

Ozzy and Sharon Osbourne are high-end victims of the housing collapse ... they just can't unload their ultra-swanky Malibu mansion.

For the 3rd time this year, the couple has reduced the price ... though not much. It started at $10 mil ... dropped to $9.5 mil ... and now, its ALL THE WAY DOWN ... to $9.45 mil.

If you wait a few years, you could probably grab it for around $9 mil.

The IRS ain't done with Ozzy and Sharon Osbourne -- TMZ has learned the couple has been hit with a brand NEW tax lien for more than $357k.



The lien, filed this week in L.A., shows the couple still owes $357,070.62 in unpaid federal income  taxes from 2007.

The new filing comes on the heels of a $1.7 million lien filed against the family earlier this month ... bringing their grand total of debt just over $2 mil.

Earlier this month, Sharon took responsibility for the tax issues -- saying she was "too involved with myself" to meet with her accountant.

Osbourne adds, "I cancelled two meetings with him over the last 18 months because I was way too busy."

Ozzy and Sharon Osbourne owe more than $1.7 million to the IRS in back taxes ... this according to documents obtained by TMZ.



The IRS filed a document last Monday with the L.A. County Recorder's Office, claiming Ozzy and Sharon owe $718,948.25 for the 2008 tax year, and $1,024,175.03 for 2009.

Sharon had a tax lien issue in 2009, when she owed $23,000 to the State of California for the 2007 tax year.

And Kelly also has tax issues ... last month the State of California filed a lien against her for $34,000.

No comment so far from the Osbourne's rep.

Justin Bieber's big Super Bowl commercial for Best Buy finally gave him the one thing he's been lacking his whole life ... facial hair.


Bieber played himself in the commercial ... but did you also notice him at the end?

Yes, that was really him.

Slash's wife has been accused of kicking another woman in the stomach at an Ozzy Osbourne concert in L.A. this week ... this according to law enforcement sources.



According to the police report, it all went down backstage -- where Slash and Mrs. Slash were hanging out after Slash performed.

Sources connected to the victim tell us Mrs. Slash -- aka Perla Hudson -- saw her rock star hubby talking to the other woman and flipped out. We're told Perla approached the two and kicked the other woman in the stomach.

The alleged victim refused medical attention -- but she did contact police and filed a report naming Perla as her attacker.

Law enforcement sources tell us the matter is currently being investigated. So far, no charges have been filed.

Ozzy Osbourne put his sick-ass Ferrari in mortal danger yesterday -- TMZ has learned the Prince of Darkness rear-ended another car in L.A. ... and then looked confused about it.


Law enforcement sources tell TMZ, it all went down yesterday morning -- Ozzy's Ferrari hit a Mercedes from behind right before entering an L.A. highway.

We're told both parties waited for police to arrive and then traded information -- departing without incident. There were no injuries and damage was minor.

The rock star's rep didn't immediately comment. As for the confused expression -- well ... it's Ozzy.

The Osbournes cast a poodle to dye for on their new/unofficially cancelled TV show.



Pierre the Poodle's owner ponied up the pooch for a bit on "Osbournes: Reloaded" -- the gag was to dye the dog pink, but six months later the dog is still in the ... pink.

And to add insult to psychic injury, since only one episode aired, the poodle skit was never even on TV.

Maybe the Obamas will adopt a special needs companion for Bo.

Here's heavy metal survivor Ozzy Osbourne (left) at an event in L.A. on Tuesday -- and former "Laverne & Shirley" star Penny Marshall (right).



One of them directed the 1988 film "Big," which was the first movie helmed by a woman to make $100 million.

We're just sayin'.

Pop/rock singer Alanis Morissette at a L.A. concert on Sunday -- and heavy metal legend Ozzy Osbourne performing in Australia last Friday.

Believe it or not, one of them was engaged to Ryan Reynolds.

We're just sayin'!