Two months after saying their "I Do's," tennis player Andy Roddick and Sports Illustrated model Brooklyn Decker couldn't be happier with married life.

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"It's great, it's wonderful," she told Us at Wednesday's Whitney Contemporaries Art Party and Auction in NYC. "Nothing's changed ... in a good way. So it's nice."

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Before honeymooning in Costa Rica, she and Roddick wed on April 17 in an intimate ceremony of close family and friends -- which included a performance by Elton John.

"It was pretty amazing," she told Us. "It was unbelievable."

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Was it the wedding of her dreams? "Yes," she said. "Absolutely!"