Article: 'I just feel so darned grown-up!' Ashton Kutcher had a reputation as a party boy until he married a woman 15 years his senior, who happened to be Demi Moore. But as Rob Driscoll discovers, Kutcher is keen to redress the birthday boundaries once and for all.(Features)

HE'LL forever be tagged as Demi Moore's toy-boy husband, but at the age of 30, Ashton Kutcher reckons he's a lot more mature than many of his contemporaries - and age is just a number.

"I just feel so darned grown-up," laughs the Iowa-born actor who turned the big Three-Zero last February. "The number is inconsequential. I know a lot of 40-year-olds who act like 10-year-olds, and I know a lot of 10-year-olds who act like 40-year-olds."

The clean-cut, good-looking star of Dude, Where's My Car? and The Butterfly Effect has, in fact, got a fascinating theory about how the ...

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