Nicole KidmanNicole KidmanAccording to US TV show Entertainment Tonight, Nicole Kidman and Keith Urban are 'officially' engaged.

But are they or aren't they?

But Nicole's publicist is having none of it, telling the Melbourne Herald:

"I can't comment on something I have no further knowledge about, and quite frankly Entertainment Tonight can't either... There was no confirmation from any publicists. It's speculation."

The paps have been happy-snapping like mad of late, with pictures of Nic wearing a diamond ring and others of Keith's hand on her stomach, whipping up rumours that a wedding and baby are on the cards.

Further pics of the actress in Keith's native Nashville - out and about with the country singer's parents - have stirred things up even more.

G Keith Urban Live 8 Philadelphia Jul 05Keith UrbanWith Nicole being named  Hollywood's second-highest paid actress this week, a wedding bash certainly has the potential to be lavish.

And she's steadily closing in on No.1 earner, Julia Roberts.

Mind you, Keith's award-winning success in the music biz must have earned him few bob too, so we'll sure he won't mind chipping in.

We'll keep you updated with all the developments.