So this is official confirmation . . .

Mel Gibson confirmed his girlfriend Oksana Grigorieva is pregnant after he was put in the hot seat by Jay Leno on The Tonight Show.

The actor spoke candidly with the TV host during his guest appearance, fielding questions about the dissolution of his marriage and joking about dating a younger woman in an episode that will air in the U.S. on Monday.

Gibson took the opportunity to clear up reports about his relationship with estranged wife Robyn, who filed for divorce in April – blaming himself for the split.

He told Leno, “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…

“Look, when it’s all said and done, I did a pretty good hatchet job on my marriage myself. I’m to blame. If you’re inclined to judge, put it here.”

Leno then attempted to lighten the mood by asking about Gibson’s new younger lover, joking, “What, is she 17, 18?”

The Mad Max star said the Russian singer is nearer to 40, before quipping, “Now I am going to have two women mad at me!”

Gibson was then prodded about rumours Grigorieva is pregnant with the couple’s first child, to which Gibson confirmed, “This is true. We’re gonna have a child.”

Leno teased about his growing brood, “So that will make 29?”, with Gibson shooting back, “Well, actually eight. I guess I’m Octo-Mel.”

It was Gibson’s 21st TV interview on the programme, which is currently bidding farewell to outgoing host Leno by inviting favourite guests for special appearances this week (begs25May09).