David Arquette has officially filed legal documents to finally divorce his estranged wife, Courteney Cox ... TMZ has learned.

Arquette cites "irreconcilable differences" as the reason for the divorce. David filed the documents on Friday ... right before he went to Israel and got Bar Mitzvah'd.

He is asking for joint legal and physical custody of their daughter, Coco, who turns 8 tomorrow.

He did not ask for spousal or child support. There is no mention of how the property will be divided.

According to the docs, David is representing himself in the divorce -- he does not have a lawyer.

David signed the divorce documents on March 23, 2012 ... so it appears he's been holding them for nearly 3 months.

The couple married on June 12, 1999 -- exactly 13 years ago -- after meeting on the set of "Scream" back in 1995.

David and Courteney first announced their separation back in October 2010 ... with both sides saying they were "best friends" who were committed to raising their daughter together.

At the time of the initial separation, the couple released a joint statement saying, "The reason for this separation is to better understand ourselves and the qualities we need in a partner and for our marriage."

David and Courteney appeared on the Howard Stern radio show together last year-- and when Howard asked if they would ever reconcile David made it clear he WANTED to ... but Courteney insisted they were better off apart.

This photo of Erin Andrews in a bikini ignited another WAR in the TMZ newsroom ... after one staffer suggested parts of the ESPN reporter were simply too good to be true ... specifically, her massive boobs.

Erin took her gravity-defying twins out for a swim in Miami this weekend ... and while they're definitely spectacular, are they real??

We dug up another cleavage-baring pic from an event Erin attended in 2009 to compare ... and now we just gotta ask ...

The Ewing Family returns to TV this week with a modern take on "Dallas" -- but before we meet some of the backstabbing newcomers, we wanted to see what the original cast looks like today!

Larry Hagman, Linda Gray, Patrick Duffy, Victoria Principal, Priscilla Presley and more Southfork regulars -- which stars have held up through the years?

Now that the L.A. Kings won the Stanley Cup, it seems like everyone in Hollywood is now a HUGE fan.

But for those holding out on the NHL fandemonium, TMZ created a patent-pending Bandwagon3000 -- which turns any ordinary celebrity photo ... into an action-packed hockey pic!

Check out which stars are now ready to faceoff.

Elisabeth Hasselbeck sure has come a long way since her fourth place finish on the second season of "Survivor" back in 2001 -- she just purchased a Connecticut home for more than $4 million!

See the 7 bedroom, 8 bathroom, 7,600-square-foot Colonial Revival in Greenwich, CT.

David Arquette has FINALLY become a man ... 'cause the 41-year-old actor just had his Bar Mitzvah in Jerusalem. L'chaim!

Arquette -- who's in Israel to film a travel show -- had been attending a separate Bar Mitzvah ceremony for a local boy, when someone suggested David should get a BM of his own.

According to VosIzNeias.com, David -- whose mother is Jewish -- liked the idea ... so he strapped on a kippah and tefillin (prayer garb) and made it happen right in front of the Western Wall.

David was later presented with a Bar Mitzvah certificate ... but as everyone knows, the occasion doesn't become official until someone puts him in a chair and hoists him around the room.

Clare Danes is the latest star to go makeup free!

The "Homeland" and "My So-Called Life" actress showed off her fresh face while out in New York City yesterday, looking pretty and natural without a drop of makeup on.