Ronan Keating's estranged wife has joined him in Australia.

The Boyzone singer has been working Down Under on the Australian version of pop star search show 'The X Factor' and took his three children, Jack, 11, Marie, nine, and Ali, four, with him.

Now wife Yvonne has joined the family and was spotted playing with her kids in an Australian theme park.

Yvonne was spotted with her children on a ride in Luna Park, Sydney, without her wedding ring, while 33-year-old Ronan worked.

A source said: "Yvonne is here but of course no one wants to intrude and ask them what's going on."

The couple announced their separation last month after 12 years together following claims Ronan had been having an affair with Boyzone backing dancer Francine Cornell.

He was kicked out of their £2.5 million home in Dublin, Ireland, but was always scheduled to head to Australia for 'The X Factor' after signing a deal before the revelations surfaced.

In the wake of the split, the 'Life Is a Rollercoaster' singer insisted he was determined to save his marriage.

He was quoted as telling a friend at the time: "I'm devastated. I know what I did was wrong. I feel terrible about what this has done to Yvonne. But I'm not prepared to give up on my marriage."