I'm one of three, so I have it in my head that three is the perfect number

Catherine Zeta Jones

The Swansea-born star, 32, is now keen to try for a second child.

"I'd like to try next year, because Dylan is two in August and I'd like as many as I can," Zeta Jones told Elle magazine.

"I'm one of three, so I have it in my head that three is the perfect number," she added.

"But Michael is one of two, so he wants one more. But I'd like to have three, or as many as I can!"

Catherine also revealed that she was playing Tom Jones records whilst giving birth to Dylan.

"I had Tom Jones playing when I gave birth. I had this surreal moment I thought my doctor was singing `Pussycat, pussycat, I love you'."

'Sweatpants girl'

Speaking about her relationship with Douglas, who is 25 years her senior, Zeta Jones said that younger men simply did not compare.

Describing herself as "an old-fashioned romantic", she also said she was "getting more like Liz Taylor by the day".

Zeta Jones starred in Traffic whilst carrying Dylan

But she pointed out that the glamorous couple do not live always live up to their public image.

"People imagine I live in an apartment like the one Michael had in A Perfect Murder and I swan around in mules and a kimono," said the star of Traffic and Entrapment.

"But it's not like that. I'm a big sweatpants girl too".

Zeta Jones has completed work on the movie of the musical Chicago, alongside Renee Zellweger and Richard Gere.

Future projects include Intolerable Cruelty, with George Clooney, Geoffrey Rush and Billy Bob Thornton.