Eva Longoria says she is "still a size zero".

The 33-year-old beauty - who also denied she is expecting her first child with husband Tony Parker - insists despite gaining weight for her role in US TV show 'Desperate Housewives', she can still fit into her existing wardrobe.

She said: "I never went up a size! I just got rounder. I'm still a size zero."

Eva also denied rumours she and Tony are having problems in their marriage, telling Allure magazine: "I know Tony and I aren't breaking up. I know we're not cheating."

It was recently reported the actress is so intent on having children that she has even threatened to leave her basketball player spouse unless he gives in to her demands.

A source close to the couple said: "Tony isn't ready for a baby. He's much younger than Eva and at the top of his profession, while Eva is in her 'baby prime' as she calls it. She even threatened to leave him twice before he agreed."