Mel Gibson has made it official—he’s going to be a dad again. This time around, the mom-to-be is his girlfriend Oksana Grigorieva.

The actor spilled the beans to Jay Leno at the taping of “The Tonight Show” which aired last night. There had been speculation about Gibson’s affair with Grigorieva ever since his wife of 28 years, Robyn, filed for divorce  six weeks ago. 

Gibsons stated, “My wife and I, our marriage ended three years ago and we’ve been separated ever since then. These things happen. It’s unfortunate, it’s sad, but you know she is an admirable woman — we still got kids together, we’re friends.”

Grigorieva is reportedly in her second trimester already and due in the fall. Smart girl—get pregnant fast so you can go for the gold, even if the daddy dumps you later.

What’s worse than finding out your dad’s dumped your mom after nearly 30 years? Finding out he’s knocked up his mistress.

According to the National Enquirer, Mel Gibson has broken the news to his brood of kids that GF Oksana Grigorieva is pregnant with his child—and additional heir to his humongous fortune. Predictably, the older Gibsons are not happy about the blessed event. The superstar’s two oldest boys by wife Robyn, 26-year-old twins Edward and Christian, are planning to hire an attorney to protect their interests.

Who can blame them? Middle-aged men have a nasty habit of forgetting about their older kids after they’ve begun to sire a new batch with their younger trophy wives.

Mel Gibson’s 28-year-marriage is on the rocks, and he’s facing the most expensive divorce in Hollywood history, but that won’t stop him from partying!

Extra reports that Monday, the same day the divorce became public, Mel was seen on a Costa Rican beach with an unknown blonde beauty. According to a snitch, “Mel was laughing and joking. He did not look at all worried or concerned. You would never have guessed he is going through what could be a very expensive divorce.”

Yeah, why let a little thing like that cramp your style. After all, being married never did.

I guess all that drinkin’ and cheatin’ finally caught up with him.

The AP reports Mel Gibson’s wife of 28 years, Robyn, has filed for divorce in a Los Angeles court, citing irreconcilable differences. She seeks joint custody of their youngest son Tom, who turns 10 this week. The couple have six older children, all over 18.

The pair wed without a prenup, years before Mel became a huge star, so he might as well just write Robyn a big, fat check for half of everything he has and save himself a lot of trouble.

The couple issued a joint statement today, saying they “always strived to maintain the privacy and integrity of our family and will continue to do so.” That means they won’t be trashing each other until their lawyers are done. But expect to see all the women Mel messed around with selling their tales to the tabs.

Screenwriter Benedict Fitzgerald is suing Mel Gibson, claiming he was underpaid for the film “The Passion of the Christ” and a judge is ordering the star to appear for a deposition. Fitzgerald’s attorneys claim that Gibson spent large sums while filming the movie in Italy, including “tens of thousands” of dollars on schooling  his brood of kids and $78,000 on his chiropractor.

 I hope his back doesn’t hurt anymore since his wallet may after this.

Our photogs caught up with Britney Spears last night as she headed to Conway Studios in Los Angeles. The singer is supposedly heading over to Costa Rica with Mel Gibson and his family for vacation. Entertainment Tonight is reporting that Brit left this morning with her dad to Costa Rica where Mel has a vacation home. The actor reached out to Britney a couple of months ago and the two had dinner. It’s been said that Mel understands what Brit is going through and he likes giving her advice. Yes, it’s definitely an interesting pairing, but Brit seems to be very open to his support. Well, have a good time, Brit! The streets of Los Angeles will be a bit quieter today.