Sources connected with Charlie tell us ... Charlie has what they call a "Michael J. Fox" clause in his contract. When Fox was doing "Spin City," his contract provided that he would keep getting paid as long as the show was in production, even if he left the show. Ironically, when Charlie took over for Michael, Michael kept drawing his salary.

Sources say when Charlie signed on for "Two and a Half Men" ... the original contract provided an identical clause, so Charlie's people believe Warner Bros. is on the hook if they keep producing the show.

Here's the rub. Warner Bros. claims they fired Charlie for cause, nullifying the contract.

These are the battles that keep lawyers employed.

Kate Middleton's family has released never-before-seen shots of Prince William's future bride -- including one of her as an adorable 3 1/2-year-old girl!

The photos, which were released via the official Royal Wedding website, also show Middleton on her graduation day from St. Andrews University with William, on vacation with her father and sister and another of her when she was 5-years-old.

The duo is set to marry on April 29 at Westminster Abbey. It's been rumored that Kate will wear an Alexander McQueen gown for the ceremony.

To celebrate Fat Tuesday, we've masked some of Hollywood's biggest stars -- can you guess whose famous faces have been given a TMZ Mardi Gras make over?

Facebook honcho Mark Zuckerberg just adopted a super-cute little puppy dog ... that LUCKY son-of-a-bitch.

As TMZ previously reported, Mark and his girlfriend Priscilla Chan had been in the market for a Puli for a while -- and finally found one in Oregon. They even created a Facebook page for him.

The couple named the puppy Beast. We were hoping he would have gone with Bark Zuckerberg.

While Kim Kardashian's song left some underwhelmed, the music video for it is sure to be hot!

Kim shared some behind-the-scenes shots from the "Jam (Turn It Up)" video shoot on her official website, where she writes "I swear Hype Williams is the most creative guy I know! He is a genius! He came up with all of the different looks and wanted me to experiment with looks that I had never tried before."

Can you guess whose super famous face was given one hell of a celebrity scramblin'?

Tom Brady and Gisele Bundchen are really living it up down in Brazil for Carnival!

Gisele, who is from the country, and the Patriots star enjoyed the view of a Rio de Janeiro street carnival from their balcony yesterday -- where they were spotted locking lips and dancing like crazy with friends!

Bundchen took part in the festivities in a more official manner on Sunday, where she got all made up and celebrated on a float with her mother, Valdir, and her sisters-in-law Nancy and Julie Brady.

Check out all the party pics above!

We've hidden some very sneaky differences in the following photos for you to spot -- good luck!

**HINT -- There are THREE difference in the following photos!**

Tahj Mowry is best known for playing Michelle's funny friend Teddy in the family friendly sitcom "Full House." Guess what he looks like now!

Sometimes being a superstar can be a real drag -- see which stars have crossed over to the other side.